Do you cut the seam on the back of the window? In my sample that I made up using a 6 inch block , there is a lot of bulk where the seams intersect. I did a search on here, but didn't find this particular issue addressed. On the first sample , I did not cut it out and when I pressed it the iron made a mark where the bulk was. Second one I cut out the bulk and like the look much better. So what do you do on your ten minute block? :lol: