Step 3

To  accomplish the thickness effect, grab the Width Tool from the tool palette (Shift-W), and simply click and drag anywhere on the stroke to change the width of that point.

Click and drag to control the width at each desired point. Drag inwards to reduce the line weight, and drag out to increase it. The fun thing is that the transitions are instant and smooth, so you don’t have to spend time tweaking.

Gradually you’ll begin to see the character develop beautifully.