You could create a line drawing from your hand-drawn image then scan that in,
clean the lines up and then colour it.
Alternatively, scan the entire coloured image and then use it as a template to
create the new image in a different layer.
If you have a graphics tablet you can trace your handdrawn image without the need to scan.

Pretty cool, thanks for the replies!

I'm using Paint Shop Pro 5 (pretty old, but then I'm pretty poor [smile]), and have been simply hand-drawing the texture on the computer in the past... unfortunately I don't have a whole lot of control with the mouse like I do with a pencil, so the texture ends up looking pretty rough. On the other hand, if I hand-draw a texture to a piece of paper and then scan it in, it's pretty easy to see the texture of the paper if it was colorized using colored pencils. Paint Shop Pro 5 doesn't have very many options to make a scanned image look like it was originally drawn on the computer, so I've pretty much ditched the idea of scanning a hand-drawn image.

But I haven't tried tonyg's idea of scanning the image and then tracing around it. Maybe I can trace the lines using another layer, and then use the eye-dropper on the hand-colored version to ensure the colors match on the computer image. I'll give it a shot and let you know how it turns out.

Thanks for the ideas, guys!

I second fyhuang's suggestion of Inkscape; I'm experimenting with it as I teach myself how to draw. I'm rubbish at any form of realistic artwork, but for cartoonish or line drawing then vector art is great. Plus if you have trouble drawing smooth curves or straight lines (like I do) then with vector s and bezier curves you can readjust the points to your hearts content. Furthermore, unlike most open source software, Inkscape actually seems to have a decent GUI.