Have a look at a cool little tool for Substance Painter by Safwen Laabidi that will allow you to add details to your clothes and boots.
This is basically a stitching tool that the artist made after making his boots you can see below:
The tool will allow you to save time on ZBrush sculpting and baking stitches, and in the end, you will get the stitches with holes and the stitch folds, plus the occlusion in one stroke.
- Stitch tool v1
- Instruction video on how to use it with ambient occlusion
You can learn more and get the tool for $3.80 here.