I'm getting ready to start another one. I got out my colored pencils as I couldn't quite make a good decision.
SO...I used pencil as my Thomas fabric that I've already purchased, then red for red and blue for blue. I drew out the pattern of 9 D9P blocks with red as the center square and blue for the sides, then drew out another the same way with red for the sides and blue for the center. I couldn't believe how different they ended up. It really helped me figure out what to put where. I can't wait to start stitching.