I just made a baby quilt with pinwheels. I used the easy pinwheel method there I stitched around the edges of two squares of fabric then I cut each square from corner to corner (in a X) and pressed open the 4 pieces. I then stitched them together into a pinwheel. They were not the correct size so I cut them down to the size I needed. I've attached a picture of it laid out before sewing all the blocks together. I needed 3 pinwheels to fit around a star and the method I've noted worked for me.