Home Improvement Questions? Ask a Handyman for Answers ASAP
Mirrors can be drilled into to allow a picture hanger hook to be installed to add a picture. This is really a job for a glass company specialist and would have a irreversible effect on the mirror.
Dependent on the weight of the picture there are several self adhesive pictures hangers that will work very well for a lightweight picture.
There are also hook type devices that can be attached to the top of a mirror to allow a picture to be hung from.Picture hangers