Looks nice. Not sure of your method, but I recommend _not_ holding the box in your hands at any time during the process. It almost looks like after you put the cup in the box and closed the front panel, you could have kind of tossed the ball over. I know that's not the method but it looks like it could be.
Nice version. Is this something you made yourself? Where did you get this version? Would you consider selling plans, I'd like to make a version for myself. Thanks.