Working in Zbrush, these high quality alphas will be a great tool to help bring your Fabric and some environments.
This pack can speed up your concept or work.
70 Fabric alphas and 4 Fabric textures, black and white .psd files, specifically created and collected with creating realistic and interesting surfaces.
And a video tutorial, how to open correctly the alphas.
All Hand sculpted alphas and texture digitally generated.
My version in zbrush is 4r7