i have been looking at textures from clothes. must say that a lot of textures from DAZ3d are not good. the bump is almost always just a B/W version from the color map.

Xurge3D is doing some good textures IMO. i noticed that he sometimes he even uses stiches. they are a good way to details your clothing and give it a more realistic look.

so i found custom brushes for painting stiching. they are for photoshop. they are very good.
aneesah.deviantart.com/art/Stitches-Photoshop-Brush-11268440