[ENDED] Jigsaw

This time your objetive is very easy: Solve a jigsaw!

Bundle game - Level 1
You can find the ITH (It's Too Hard) link HERE
Please don't share answers nor links, fair play! (^_^)/

Sorry about having to download a file. I was searching for other alternatives, but I didn't find them. I have included the checksum of the file in the puzzle (if you don't know what a checksum is, just ignore the SHA-1: xxxxxxxxxxxxxxxxxxxxxxxxxx thing).
Sorry about my photoshop skills too :/
If you don't have any program able to open .psd files, you can try this web: http://pixlr.com/editor/

You can't find the answer without solving the jigsaw puzzle, so don't try to bruteforce it :)
Deadline: 4 days >See time left here<

View attached image.