The secret for a glove-tight fit for trim corners is a coped joint. With this technique you can even make complex crown moldings fit without leaving gaps. http://www.familyhandyman.com/carpentry/trim-carpentry/how-to-cope-joints/view-all
Upgrade those builder grade cabinets by adding some molding to the cabinets.
30 Year Old Kitchen Makeover traditional kitchen, bead board above cabinet
This handy little “cheat sheet” can be used on any crown molding project that requires inside and outside corners. Visit Dunndiy.com to learn more about how to measure, cut, and install crown moulding.
Indirect lighting (or rope lighting) installed in a bedroom. Install a dimmer switch for varying accents and moods -- A really nice touch when installing crown molding.