Gather assorted sweatshirts, colors of your choice. Cut squares or shape desired from each and sew together creating seams. Do this until you have obtained the desired size quilt you would like. Finish by steaming the seams flat, cut backing from chosen material and sew to quilt top.
In order to make this quilt, you would need to be an experienced quilter. You would have to make strips from the sweatshirt and than cut into squares. Sewing them together will be hard as this material is stretchy. I would suggest hand piecing and sewing.