Sara has just sent me some lovely textured surfaces made from grout and plaster - see her blog http://www.englishroseinkuwait.blogspot.com/. I've taken one image of the plaster on scrunched tissue through different 'image effects' in PaintShopPro. The results could be used as 2D texture as well as provide you with shapes for the 'shape study'. You could also take a small section and work from that. Ideas for everyone else working on the texture stage in Module 1 of the Diploma. Have fun.