If you keep your seams at a scant quarter and watch your pressing you will be fine. I have found that I had to be careful with the pressing, it is easy to get seam pleats in those little suckers. Most of the time you will be small rather than big, if you do have a block that is to big, just take the last seam in a bit, but if you are a little small, then wet your block and stretch it to size and pin it down to dry. I agree, check Sharon Schamber's video's. have you seen the Shade Cascade log quilt? It is a free pattern on the Blank Quilting website. Very pretty, I'm putting together a serger class for it.