just remember that your fabric needs to be 1/4 inch over each line and your working your fabric upside down I'm not sure where I would start but i'm thinking the inside 1/2 square off the small diamonds then work your way out to the edges and have that 1/4 over on them. i could be wrong though just a thought, good luck, I have pp with projects from carol doak I believe she has a tute on doing your own designs on her website. caroldoak.com
Sandra