Fixtures are brushed gold and mirror is black and gold. Current artwork is black frames.

Very Pretty. I would paint the beadboard white so the vanity doesn't disappear. Maybe paint above a lighter sage than the vanity until you can wallpaper.

I'd paint the beadboard the same color you choose for the trim. White?

I'd paint the upper part white as well, you'll be able to see how light the room is without paper.

Choosing the background of the patterned wallpaper to work with the lighting in the room... will you keep it light (if the room feels dark or can you go a bit bolder if the room doesn't feel closed in already) Only YOU can make that decision.

The floor looks fun! All brushed brass/gold sounds great, Black frames? the same gold unless your set on black. It's a powder room, a tiny jewelbox. Less contrasts, especially if you're going for paper in the future.

Easier decision once you see everything together.

I think it would be more impactful with wallpaper.

Maybe skip the bead board for a less broken up feel (compare to the above).

I love the mockups. What program do you use? It helps to see it together.

ChatGPT was used/pretty simple to learn.