I finally finished making my last present.. for last Christmas .
It is a simple cherry for a mirror. Drawbore tenons on the top and wedged through tenons on the bottom. The finish is BLO, poly and mineral spirits:
I'm sure you took precautions for that door knob to not be able to hit the frame or mirror (maybe a long door stop)? Might consider also adding a hinge pin door stop also just for added assurance.