What I was able to find by googling is that you make them like a t-shirt quilt. It said 16" blocks, but that would depend on the size of the jerseys. Squares or rectangle of the knit fabric should be stabilized using a very thin woven cotton iron-on. Then either sew them together or add sashing and sew together. Many people also made the borders with left over pieces of the Jerseys(stabablized also). There is quite a bit of information about t-shirt quilts. One lady said she would never do it again, but there are longarm sites that make them for people, so you should be able to do it. Good Luck!