The Moda Bakeshop instructions are quite detailed, with lots of helpful photos of the block construction process. But the instructions don't include pressing directions. I quickly realized that if I pressed to the dark, I'd wind up with lots of bulk at the seams when it came time to join the blocks. So I pressed my seams open instead. That has worked out well as the blocks are nice and flat and the woven strips are lining up very nicely. You can see the joining seam running horizontally in the middle of the photo below.
I'll be back with the finished flimsy soon.