I have 2 design walls, and they're usually both occupied. So....I use my king-sized bed to lay out my blocks; then I put a piece of paper on the first block on the top row left, with A-1 on it. Then I pick up the blocks, always keeping the A1 block on top. First row done. Then I move on to the next rows, labeling them B1, C1, etc., stacking, and removing them as well. Using this method, the blocks are easily removed and sewn into the quilt in the order you intended. Oh, and I also take a picture as I go just to be sure!