Geri B

i haven't worked on "mine" for almost a year, but I do remember maybe doing background squares in batches of 2 rows, 6 in each row, i sewed them together at the fold, then tacked those points down,inserting the window pane, sewing around that flip out in a continuous line (machine, not hand)
from one to the other from end to end.....then joining those "blocks" and filling in.....I seem to do most large project in chunks like that-breaks the monotony for me...do a batch of cutting, ironing, sewing, then back to square one...CW does get cumbersome and heavy..that's just how it is....hmm, maybe I'll dig it out and try to finish it! I read the directions on the site given. She apparently tacks down the four points, then zigzags the squares together..never read it that way before, but we find what works for us.

nanac

Thanks to all who replied. PaperPrincess hit it right on the head, which made me hit my head and say DUH!! I don't know why I was overthinking, but I originally thought I would have to find the square root of 37 divided by 3 1/2 times 19, or some other complicated formula, when all I really had to do was add 1/2 inch to my dimensions. Anyway, thanks everyone. One of the reasons I love this Board so much... somebody usually knows the answer ( the right one) and usually pretty quickly. Off to cut some 10-inch squares , lol