I perfered a little less angle so that the I can still see the buttons easily and the buttons do not move around when I press them at this angle.   Also, I made this hollow so that it can be weighted and the cap glued into place.

***** It is important that you print in the original orientation so that supports are not needed on the inside.  I filled mine with BBs and super glued the cap on.  It works great!.

Thank you @n3rding for the original design.