Blender lets you trace things. This will let you make something that looks really good. Follow these steps to your first tracing exercises.
1. Go to one of these websites to find a picture that you want to trace.
http://www.cartooncritters.com/prntdraw.htm
http://www.simpsoncrazy.com/gallery/townspeoplepictures.shtml
2. When you find the picture that you want right click on the picture.
3. Click Save Picture As.
4. On the left side of the screen click "My Documents."