Spider-Man

This one's pretty simple, but it looks really good as a gun sticker.

Layer 1: Triangle, red (clips off the overflow from lower layers; see below)
Layer 2/3: Thin Rectangle, black (makes the "angry" eye shape; see below)
Layer 3/4: Medium Oval, white (eyes)
Layer 5/6: Medium Oval, black (larger than layers 3/4; makes the eye border)
Layer 7: Oval, red (face)
Layer 8: Oval, black (border around face)

This expanded view should help to explain some of the more complicated layers. Note that I've pulled the black rectangle on the right up above the triangle to show how it was laid out to trim the eye ovals.