>>17036001Here's how I do it:
When the pieces are first swapping, focus on the middle Pokemon, and see where its pieces go. The picture will change immediately once its done swapping, but you'll see where the two or three pieces that made up that 'mon went and you can put them where they go in the middle.
Then, you'll have a good two-three pieces in the right place for when it zooms in on a Pokemon's face, so you can easily start putting the pieces in the right place.
If you ever find yourself with a few seconds where you don't know what to do, find the corners and put them where they go. The borders change colors as they approach the corners, so you can sort them by color, too.