Need some serious interior design advice?

Savvy

Hey everybody. So our bedroom looks like absolute trash, we have this horrible green carpet with white trim on the walls, and the owner will not let us rip the carpet up and put hardwood.

Do not mind the plastic horses on the wall, and yes my dog is alive and well. Note the ugly green shade.

Here I have saved some interior design ideas. Do you think any of these are doable with the shade of carpet, especially the forest tree backdrop one? What do you think will be the hardest part?

Any advice is greatly appreciated!