I'm having my kids draw me whatever they can think up, and I'm turning them into battlers. I scan their images, outline them, cleaning and smoothing everything out, color them, and then add shading. With the bright colors I use, I think it gives it a very cartoony look. Everything I post here is free to use, so long as you credit "Brandonn".
http://img174.imageshack.us/img174/1893/spiderjg6.png[/img]
http://img219.imageshack.us/img219/5782/spyderfb4.png[/img]
http://img407.imageshack.us/img407/6796/smashut9.png[/img]