I did a stack-n-whack and it wasn't made with pre-cuts. I had to find the repeat in my fabrics and cut the exact same piece to make my block. It was a butterfly and I had to turn every other piece over and match it up so it looked like there was movement in the butterflies wings.
The colors are really much more vibrant. It was a wallhanging gift for my MIL and she had it framed and the picture was taken with a camera phone.