Normal to Curvature Map
Easily convert normal maps to curvature maps with this Photoshop action file.
Krita - Kickstarter
Help Krita, the free paint software, become faster than Photoshop by supporting them on Kickstarter.
Art for Games - Memory Folds in Clothing Tutorial
Art for Games have posted a free tutorial on creating memory folds in cloth, using ZBrush and Photosohp.