Side mounted 8 puzzle(with possibility of adding picture)

This is 8 puzzle that i designed that can be solved while being attached to a sidewall of cube500 case. 

Attached files: frame, numbered pieces, single piece for when you want to use your picture, cut outline model so you can precisely cut said picture.

Assembly

Pick a frame and either numbered pieces or empty pieces for your picture and print.

Attach frame to case500 plate and start inserting pieces from lower right corner, correct orientation and proper way to insert is shown below. 6 pieces are straightforward and the 7th and 8th you have to snap the piece in frame to fit it.