ONE. For shelves mounted above the sink, you want to make sure you are installing them at a height that you don’t bump your head when you lean in to wash your face. Alternatively, consider a built-in recessed shelf/ledge that won’t get in the way.
TWO. Laminates aren’t the best material for your bathroom vanity cabinet since they can get damaged when they come in contact with water. But if you must use them, make sure your cabinet area is kept mostly dry. Also use a divider for your shower to safeguard against splash and to contain the hot steam within the shower area. This helps to prevent your vanity area from being exposed to too much moisture.