Good luck bebe! Hope it works out this time.
I was making a photo quilt for my sister's 50th b-day. I was down to the last couple of blocks, I was winging it - it wasn't a pattern. I kept cutting the background fabric, and it was too short. So I'd measure again, and it was too short. After about the third time, I realized I wasn't taking into account the seam allowance on the left and right of the block (duh) and I ran out of fabric. Had to go to the quilt store and they still had some, but I missed the long arm quilter by a day. Luckily, my DH was nice enough to drop it off at the quilters house after I was done and we had it in time for her party.