I just realized that I took these pictures before I added the D rings. All I did with them was add some extra straps and used the d-rings to make a closure just to keep it from being all open and revealy.
I used an old jagermeister shirt that no longer fit me as the lining for this, with some planned-out (shock!) cutting I put the symbols going up the inside of the strap. I added a zipper pocket in the front cause I like pockets and I needed someplace cozy to keep my phone and wallet. You can't tell in the picture but the pocket is gathered up the edges to give it some extra room.
I used an old purse of mine to make a pattern. Although halfway through I kinda scrapped the pattern and made it up. It works. Cept the lining is too big and I think the strap may be too long. Maybe my arms are just too short.