Never forget to sample paint before buying in large quantity! Even the best brands will have some variation from the sample chip to the actual paint on your wall. It is important to bring a small amount to your site to physically paint it in the space. You will never know how the lighting, texture of your wall, or surrounding colors will affect the look and reflection of your paint. This is especially relevent when you’re picking lighter colors, as they will change to a darker tone depending on the shadows on the space.