I love doing this, we call it "vintage revamp".  We go to a thrift store, find the nice XXXL dresses/shirts with an interesting fabric, and then deconstruct it and turn it into something human. Its a way for students who do fashion to be able to afford the hobby (a yard of fabric can be 25$, a shitty fatty dress thats 4 yards of fabric will be 2$) One fatty dress shirt had a super cool tribal print on it, I made it into a shirt, a skirt, and a scarf. Maybe someday soon I will start doing this on youtube, I didn't think there would be an interest in my DIY revamps.