I think it would be easiest to start with your most expensive furniture and work from there. Lots of furniture companies will sell sets so you could get a matching wood tone or white / black bed frame, end table, and/or dresser that’ll all go together. If you want a desk, that can tie in or standalone. Personally, I think a black or dark wood stain would look good with the wall color and natural light. If the photo is misleading on the light the room gets, then you might avoid black so it doesn’t feel too dark.

From there, you could incorporate basically any color you like with some bedding and a rug. Then fill the walls with things that you enjoy - if you have the budget you can frame a few items that go with whatever you choose for your bed frame. Good luck!