or you could just to it the old fashioned way with a pencil, a ruler and a piece of paper.
i have said this before, but i am so thankful for the way i was taught to draft a block in my introductory quilting class. it taught me to break down blocks into their elements, to see how most blocks are 4 and 9 patches and to understand how to resize or alter blocks. once you start drawing them out, you get a better sense of how you might chain piece, or different tricks to make the piecing go a little faster. time well spent, for sure.
aileen