I'd say you want piecing with larger pieces, so you can showcase the butterflies that are large, and give you room for creative fmq'ing. How about Yellow Brick Road? It's the quilt with three blocks, one with three pieces, one with four pieces, and one with five pieces. You make all those blocks then lay them out in a pleasing way, mixing up the blocks and rotating them. The resulting quilt looks complicated, but isn't. It's a pattern I love--pretty, complicated looking, but easy and fast.