I drew some ugly kid.

You're good, but I've learned that anyone who draws or plays with crafts has a lot to win from learning a bit on photography, not just for learning how to look at things and composition (not that I'm criticizing you for that or anything), but also for the reproduction of other mediums.
Try using a scanner for all small flat surfaces, and if you have to use a camera, try your best to keep the camera and the flat surface parallel to each other. It's also a good idea to get the white balance correct is you have a camera that's good enough for setting the white balance "manually" (all compact cameras and SLRs have that function), this keeps away the bluish, yellow or redish tint. It's also a good idea to make every drawing made in black and white, or monochrome picture grey scale or monochrome from editing, this can be done in GIMP and Paint.com by first removing all saturation, and then colorize it to whatever color you want if you want a "colored monochrome" like sepia or cyanotype. This has nothing to do with your artwork itself, but representing it well on a computer also has a lot to say.

Jam it back in, in the dark.