Use the image I sent you to help you with your sprites. (Collaborates well with PGE Calibrator). My advice is to put your player sprites in the corner.
http://sweetclipart.com/black-and-white-checkerboard-pattern-1585 This might help you. Save the image before you start. Just go to paint or whatever you use and resize it after cutting. Cut half of it out from the bottom because it's 20 by 20. Do the same with the right or left side. Resize it to 1...