DO: Backlighting is a great strategy to attract customer attention and drive them to a specific area. However, additional lighting in front is needed to balance the bright back wall.

DON’T: See what I mean if the front is not lit and only the back is?  While this may marginally work for items such as eyeglasses/sunglasses, other merchandise displays fail when the product face becomes dark especially solid items such as the branding sign seen here.