Useless Extravagance Piece
A lot of money should not be spent on an item that will not be used, or on anything that does not have a high need for excellence in craftsmanship. The extravagance of this nature will not benefit you in any manner. Decide on your priorities, and don’t be a snob simply because you can get away with it.
Not Testing Colors Of The Paint
One of the most common mistakes people make is not testing color on a small section of their wall before painting a whole wall with it. Paint a tiny section first and then determine whether or not the color is appropriate for the rest of the piece. Take into mind the amount of light available. You must examine the color in both natural and artificial lighting to get a true sense of how it appears.