This was once a normal black tshirt. I cut the sleeves off to cap length, cut the neck line to be off the shoulder, and trimmed some off of the bottom. Then I stretched the material where I had cut it, so that it would roll up and have that cute 80's look to it. After that, the rest of it I painted with puffy paint using a brush and my fingers. I tried to recreate a doodle that I had done in one of my sketch books. Sorry for the crappy pics, camera is out, so I'm using my phone. Enjoy!
(and excuse the spots on the mirror, its really not dirty, it has paint splatters lol)