I think I would mirror the height and spacing of the medicine cabinet. Let me render it to be sure.

Balanced, but kind of institutional-looking. Is this what you're going for?

The Institute of Squares Incorporated, which I'm sure you cannot be!

A bit better.

Crossed post.

Lol, I got into trouble for saying that last night, Lynn.

Tribble, "trouble" is your middle name. I don't see how you can ever be out of it.

Follow me, Jennifer.

I can see that you're repeating shapes. If you want a smaller mirror than whole wall (I like whole wall), why not repeat the oval already in the room?

Yeah, do what Madera said...and it will look like every '70s house that people are ripping the mirrors out of in 2016.

Look--it's bathroom--you need to see yourself clearly and evenly lit. That's all. You don't need to see the other 16 square feet of the back wall of the bathroom reflected in a mirror wall.

What you do need is to get rid of that light and put lights on either side of the mirror at face level so you can see yourself as others see you, and you can see the details of your makeup and check your teeth, etc. You can't do that with the harsh shadows from a single light up toward the ceiling. That's Bathroom Lighting 101.

Thank you all. I left out mentioning that the mirror there now is a stick on mirror that I got at 99cent store just so my son could brush his teeth. Don't seem to have gotten a consensus, but I appreciate your ideas and input! The renderings and examples were very helpful! Thank you!!