Master 18 essential sketching lines to draw anything! From blind contour to cross-hatching, add depth and life to your artworks!

Okay, so you want to draw anything? But…

Your sketches look clumsy and amateur?

Well, I’ve got some great news for you! : )
With these 18 indispensable sketching line techniques, you’ll be able to do just that.
It’s super important to understand these basics because, remember, a complex drawing is just an accumulation of simple lines!

We’re going to cover everything from ghost drawing to push and pull force lines.
These techniques are like your secret weapons in the world of design sketching!
They’ll help you structure your drawings, add depth, show movement, and so much more.

It’s going to be awesome!

The 18 “Designer’s Sketching Lines” Toolkit:

A. Invisible Lines

#1 Ghost Drawing

Draw circles using the ghost drawing
Draw circles using the ghost drawing
Try sketching multiple circles
Try sketching multiple circles

Okay, so ghost drawing is when you simulate the movement before actually drawing.
It’s super important to draw with your full arm, not just focusing on the pen nip. This is a “no no”!

What we want is to focus on the whole arm doing the movement.
This technique works for the five basic arm movements in sketching:

  1. Straight line
  2. Circle
  3. Ellipse
  4. C-curve
  5. S-curve
The 5 Basic movements of sketching
The 5 Basic movements of sketching

With these five elements, you can basically draw anything you want!

Example of shoe drawing using straight lines, C-curves and S-curves only
Example of shoe drawing using straight lines, C-curves and S-curves only

B. Construction Lines

#2 Perspective Lines

Easy Perspective Lines + Designer Starter Kit
Cube with 1-point perspective

Perspective lines are imaginary lines that help you build your drawing.
Let’s say I want to draw a cube.
I start with the horizon line, vanishing points, and then “hop la!”
I connect the dots.

These lines help me structure my drawings.

Beginner mistakes in perspective (From the Designer Starter Kit)
Beginner mistakes in perspective (From the Designer Starter Kit)

#3 Axis of Symmetry

Draw the symmetry axis with a straight line
Draw the symmetry axis with a straight line
Draw the right side with an S-curve
Draw the right side with an S-curve
Complete the left side using iteration if needed
Complete the left side using iteration if needed

This is like an imaginary line that helps you draw symmetrical objects or characters.
It works in 2D and 3D (as rotation axis).
Most objects around us are symmetrical, maybe more than 90%!

#4 Contour Lines

These are imaginary lines that help me communicate the surface of the volume.
By default, they express a flat surface, but you can use them to show bumps or curves!

#5 Vectors

Vector drawing on curve
Draw an S-curve and identify a few vectors
Modify the curve adding extra vectors on top
Modify the curve by adding extra vectors on top

Vectors are directional lines that help you modify curves and organic forms.
They show the direction of your curve at certain points.
Great for organic forms!

#6 Ground Plane

Draw the ground plane with a straight line
Draw the ground plane with a straight line
Draw the shoe on top of the ground plane
Draw the shoe on top of the ground plane
Tadaa! You have your shoe drawn on the ground
Tadaa! You have your shoe drawn on the ground

The ground plane helps you visualize objects on surfaces.
It’s super helpful when you’re drawing products or anything big on the ground or on a table.

#7 Joints & Skeleton

Draw a skeleton adding some joints to set the posture
Draw a skeleton adding some joints to set the posture
Connect the joints to create the skeleton
Connect the joints to create the skeleton
Modify the arm position moving the elbow's joint
Modify the arm position by moving the elbow’s joint

This is great for quickly sketching characters, robots, or anything with moving parts.
Instead of going through all the details, you focus on the architecture of what you’re drawing.
“Joints – connection – joints – connection!”

#8 Basic Volumes

These are simple shapes like cubes or cylinders that form the foundation of more complex objects.
Remember, a complex drawing is just an accumulation of simple lines!

C. Communicate Visually

#9 Line Weight

Cube without Line Weight
Cube with Line Weight

This is all about using bold lines to make certain elements pop!
It’s called line-weight, and it’s basically giving more weight to the line to make things pop-up more.

#10 Axis of Rotation

Axis of rotation
Axis of rotation
Drawing object with 3D Axis of rotation
Drawing object with 3D Axis of rotation

This helps you visualize the rotational movement of an object.
It’s like doing pottery, but with your pen!

#11 Ruler Lines

Draw a line to evaluate a distance so you can use it as reference to draw with good proportion.

#12 Notes

Add notes on your sketches
Add notes on your sketches

There are different styles for adding notes to your sketches.
You may draw straight lines to connect your notes, or use curves.

Here’s a cool tip:
use two parallel lines, and write inside with capital letters.
It looks super neat, especially for architecture projects!

Use Parallel lines and Capital letters for neat notes
Use Parallel lines and Capital letters for neat notes

#13 Hatching

Draw hatching using the ghost drawing
Draw hatching using the ghost drawing

Hatching is great for adding shadow, texture, or showing sections.
You can have different types, more or less close together.

#14 Background

Add a quick background using a contour, then hatching
Add a quick background using a contour, then hatching

Adding a background can really make your object pop out more.
It’s a simple technique that can have a big impact!

#15 Ground Shadow

Draw the shadow contour then add hatching inside
Draw the shadow contour then add hatching inside

Adding a ground shadow gives more 3D effect to your product.
It’s like magic – suddenly your drawing looks more realistic!

D. Bring Action

#16 Dynamics

This is all about adding movement and rotation to your sketches.
It’s particularly useful for cylindrical objects for example.
You can use the axis of rotation and add some curves to show movement.
It’s super cool!

#17 Action Lines (Gesture Drawing)

Action lines are awesome for gesture drawing.
They show the direction of movement and force.
Feel free to exaggerate the movements – it makes your drawings more dynamic!

#18 Push and Pull Force

These are like imaginary lines of force that help you visualize form changes.
If you want to pull something or push it to change the form, these lines will help you visualize it.
Super helpful!

Mix the techniques practicing on basic volumes
Mix the techniques by practicing on basic volumes

Time to Practice some Easy Sketching Exercises!

Alright, we’ve covered a lot of ground here!
From invisible lines to action lines, these 18 techniques are your toolkit for amazing design sketches.
Remember, all these techniques are complementary.
You can mix and match them to create anything you can imagine!

The key is practice, practice, practice!
Start with ghost drawing, get comfortable with your arm movements, and then build up to more complex techniques. Before you know it, you’ll be adding ground shadows and dynamic lines like a pro!

Get your ballpoint pen and sketchbook ready!
And remember, a complex drawing is just an accumulation of simple lines and techniques used together.
You’ve got this!

Ghost drawing - the 5 basic line movement - 800
Practice sketching daily with these 5 basic line movement!

Exercise I. Invisible Lines

Ghost Drawing

  • Practice simulating the movement of drawing without actually touching the paper
  • Perform ghost drawing for the 5 basic arm movements: straight line, circle, ellipse, C-curve, and S-curve

Exercise II. Construction Lines

Perspective

Axis of Symmetry

Contour Lines

Basic Volumes

Exercise III. Communication Lines

Line Weight

Hatching

Background and Ground Shadow

Exercise IV. Action Lines

Dynamics (around cylinder)

Action Lines (Gesture Drawing)

Push and Pull Force

Remember to practice these exercises regularly and have fun while learning.
Don’t aim for perfection; focus on improvement and developing your skills over time.

Happy sketching session, guys!

Cheers,
Chou-Tac


Video Tutorial Timestamps:

  • 00:00 Introduction
  • 00:32 #1 Ghost Drawing
  • 05:37 #2 Perspective Lines
  • 07:40 #3 Line Weight
  • 08:10 #4 Axis of Symmetry
  • 10:01 #5 Axis of Rotation
  • 10:40 #6 Ruler Lines
  • 11:42 #7 Vectors
  • 14:07 #8 Ground Plane
  • 15:51 #9 Contour Lines
  • 17:56 #10 Push and Pull Force
  • 18:50 #11 Joints & Skeleton
  • 20:43 #12 Hatching
  • 21:23 #16 Ground Shadow
  • 22:06 #14 Notes
  • 23:41 #15 Background
  • 25:18 #16 Section
  • 25:25 #16 Dynamics (around cylinder)
  • 26:55 #17 Action Lines (Gesture Drawing)

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Chou-Tac

Hello! I am a Product Designer from France.

If the sketching methods I’ve acquired aid me in my life and in my industrial design career, I believe that they can also help you reach your design goal as a student or professional.

My aim is to help you all along with your design projects and journey!

Leave a comment in the blog or send me an email at choutac@thedesignsketchbook.com : )

Chou-Tac

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