When I do something repetitive (like the many 9-patches), I have a problem keeping things straight.
I take a piece of graph paper and make a block where the patches are at least 1/2" bigger than the cut size.. If the patches are all alike, I label with the color, if not I number the patches in the block. I label the top, bottom, right and left of the paper block on the paper outside of the block. I make piles of cut patches to correspond with the numbers of the patches on the paper block. I put the stack of patches on top of the paper block with the top of the block away from me. When I pick up two pieces, I put a pin close to the seam I am supposed to be sewing. I do one block at a time.
Hope this helps -- it helps me to keep things straight.