If you're determined to have a certain color on your bedroom walls that is inadvisable (like bright red), consider a more muted shade (like burgundy), which can soften its visual impact.

"I'm all about using the darkest, moodiest, and boldest paint colors in my apartment because it's fun!" the DIYer says.

As an interior decorator, polyester sheets, busy patterns, and nightstands without storage are things I would never have in ...