I have made one starting with a very large sweatshirt. It was made crazy quilt style with large raw edge patches and zig zagging around the pieces. In the end I remember cutting the center front and altering the sleeves from the inside. There was a video on youtube. Probably the only thing I would change is I put the fuzzy inside to the inside of the jacket. If I do another one, I would put the outside of the sweatshirt (the smooth side) to the inside of the jacket. If that makes sense.