Quote Originally Posted by Feralspirit View Post
Sorry if this comes a little late, as we are in finished maps forum, but bevel and emboss function under layer tab> layer effects with your buildings selected, inner bevel, size large enough to cover your buildings (each 1 = 1 pixel into your buildings from all sides, so half your largest building will do), angle (looks like your sun is at 1:30 so -15 degrees) will give your roofs peaks, shadows and highlights on appropriate sides.
Isn't this in Photoshop? Or is it in a plug in? I just got the Eye candy plugin for Gimp, and a bevel is in there, but Layer Effects in not a basic Gimp function afaik. If there is a plugin for them, PLEASE let me know.

Thanks for the comments folks