I've always picked one thing I love and build my room around that. It's kind of like buying a dress and then then picking accessories that compliment it. Or it can be picking a necklace and picking everything to go with it. Below is a lovely example of one gal I know who picked a painted screen and decorated a bathroom using it as her theme and focus. Notice in the mirror that the screen is right behind the vanity. Her handtowel matches the screen.
The screen is there as a well-place divider between the commode and the rest of the room. Great idea and fetching way to camouflauge the negative while accentuating the positive.
Job well done...in my estimation. What do you think? selahV