11. Select all the pattern strokes we just created and go to Object > Expand Appearance, then Object > Flatten Transparency. Now we can grab the Eraser tool and simply erase the pattern areas that we don’t need.

12. Create a new layer and start adding and duplicating circles, using various sizes to add details to the snakeskin pattern. I also created a new layer behind the outline layer, and in the area near the belly, filled it with black using the Pen tool and added a bunch of white circles in various sizes.

13. Next, set the Pen tool to a 0.25- point stroke, zoom in so you have plenty of detail, and start adding shading and linework details. Add in and duplicate some more black circles for the skin pattern.