Have you considered wall mount for tv?

No not too big

I would center the mirror between the lamp and Tv.

The lamp, tv and mirror are too crowded
I would hang the tv, center the mirror and then will see about the lamp

Lamp is fine..center the mirror...angle the TV...and remove the pictures. ( is there another area to hang the pictures vertically and I think the frames should be dark. A larger mat would be better)

Whatever is done, lampshade shouldn't "hang" over edge of dresser, it looks as if it's going to fall off. Trash the paper shade and get a fabric shade. It'll look nicer and the light will be better. Do not center mirror, but move it to the right by about 6". A friend with a good sense of proportion is a big help here. As blrussell said angle TV. A nice dish or box - or both in contrasting colors, but no brown! - for change/keys will look nice. Whew!

A wall sconce would be better.