Maybe also try placing the bed on the wall so the bed is facing the mirror.

After moving the bed to the wall facing the window then switch the tv and make-up table...a couple baskets to store items. Maybe hooks to hang more fashionable items. Two small side tables with lamps. TJ Maxx Home Goods may become your new best friend!

Without seeing the entire room I would agree with Forrest's suggestions re furniture placement. An adorable bed. But perk it up with some nice throw pillows. While a 16 year old will likely be a mess start by eliminating clutter. Inexpensive but nice looking baskets and or basket hampers are an easy find at Home Goods. And a cool tall floor mirror can be found at Ikea. Some inexpensive art in white frames will bring character

I would place the bed on the tv wall (I'm guessing that is the wall you see when you walk into the bedroom). Then, do the corner desk and tv on the walls where the bed is now. It's okay if your accent wall isn't the bed wall.

That's what I was saying.

I would agree, either the bed should be moved against the long wall it's closest to (which would take up that wall space) or just move it entirely on the side where the TV is currently. I would replace the white hanging mirror with a larger one, maybe something framed in brown or black to give the room more contrast. Then I would get a long dresser to go along the wall, you can even put your TV on top of that--- unless you would consider hanging it on the wall to save some counter space. The laundry baskets can be moved to the same side as the dresser and TV, and the larger mirror can hang against the wall facing the window. Large mirrors also help to make the room feel bigger!