Cut the shorts, dip them in bleach, and use fabric paint for a pattern!This will probably be my last shorts pin of the summer. I would work with jeans as well though going into fall. You could bleach up to the knees for example.
DIY High Waisted Shorts from Jeans. Go get yourself a pair of mom jeans from Goodwill and try this out. I got mine for a couple of dollars! It's also a good idea to go a size or two bigger than your normal size so it's not too tight and too short.
Add fabric to upcycle shorts. Place fabric over shorts, trace outline of pocket + or extra, cut, then fold or place in pocket and sew (you fold that extra fabric so it looks like a professional seam). Then add fabric to the bottom and your done!