I just finished my first sweatshirt jacket last month and I am IN LOVE WITH IT!!!! I didn't use a pattern, just cut up a sweatshirt, pieced my top to be roughly the size of all the cut up pieces, found backing material roughly the same size, pin baste, quilt, and then serged all the pieces together again with a zipper in the front and reattached the ribbing to the cuffs, collar, and waistband. Viola!