I like the gun comming out of the sig Im gonna try that style sometimes with those vector lines to express the face more, and the hands as well You got an tutorial for that?
The way I do it: Step 1: Use the pen tool/whatever tool you want to cut a decent render from the stock you're using. If it's already cut, skip this step. Step 2: Duplicate that layer. Set the fill to 0% and give it a stroke under blending options. Step 3: Move that layer a bit to make it more visible. You can also reduce the opacity of the layer to give the fading out effect I did in that sig. Rinse, repeat, boom.