I see your post the picture of the pattern is on grid paper, maybe you can duplicate the pattern on the grid. Maybe that might help. How about this, start with the smallest block. How about making the block 2 inches. Now make four of them. Lay them out as a four patch. Now use this size for the medium block. Then take the medium block and one of the two inch block and place two inch on top of med and and place one on side that is the size of the large block. I hope this helps.