Always good advice to follow. I started my half log cabin quilt on Sunday and goofed! I cut about half the pieces in the wrong measurement, this wouldn't have been to bad, but I also ran out of fabric. So with the price of gas I get to take another road trip to the quilt store for 1 little yard of fabric (I'm sure I'll come home with more than the one yard).
I'm very happy with the blocks so far, and I think it'll be a very interesting quilt when finished.