PB - Folded - a merchant resource that can be used to create your Free/Commercial projects. You will get 40 high quality fold brushes and .png overlays. Using this simple tools now you can add a fold anywhere you need it! Very easy to use even if you do not know photoshop well. Just copy and paste over a fabric you need!
Brushes and .png are very high quality, most of them have light fabric texture effect.