Want your sketches to jump off the page? Master line weight variation—the secret tool designers use to emphasize form, depth, and light. With just subtle pressure changes, you’ll create sketches that speak louder than words. Ready to impress your audience with every stroke? Start refining your lines today!
Line Weight drawing practice

A designer needs to be good at visual communication.

A great designer communicates through images. When your ideas are clear and your sketches speak for themselves, you don’t need to stand there explaining, the board does the job for you!

Your goal is to guide the viewer’s eyes smoothly across your presentation: make it dynamic, attractive, and easy to read. This technique is a favorite among product and transport designers. By simply playing with line weight, they make their sketches pop right off the page.

Follow these simple steps, and your sketches will instantly look sharper, cleaner, and more professional. Let’s make your ideas shine!


STEP 1 Draw the Cube in Perspective

Weight-line
  • Get ready to draw with a light pen pressure
  • Draw a cube in perspective

STEP 2 Add Some Negative Space

Weight-line1

  • Keep the same pen pressure
  • Detail the cube by creating negative space

STEP 3 Define the Source Light and Add Line Weight

Weight-line3

STEP 4 Draw the Background with Hatching

  • Define a source of light – usually at the top left.
  • Retrace the lines of the volume with slightly heavier lines.
  • Bold the lines are opposite to the source of light – only the lines which are at the edge of a single surface.
Weight-line2

  • Add a quick and simple background with hatching

That’s all!


If you want to make your first steps in drawing, I invite you to download the Designer Starter Kit to start learning with the basics of perspective step-by-step.

The Designer Starter Kit exercises in 6 videos:

  1. How to draw straight lines
  2. How to draw a perfect square
  3. How to draw awesome circles
  4. How to sharpen your sense of proportion
  5. How to draw a cube with 1 point perspective
  6. How to draw a cube with 2 points perspective

Once again, these videos are linked to the Designer Starter Kit.

To enjoy the series of sketching tutorials better,
I recommend you guys to receive the book first.


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Chou-Tac

Hello! I'm Chou-Tac, 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 dream goal as a student or professional designer.

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

Chou-Tac

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