Vanity lights are available in single or multi-light versions and can be hung with glass positioned up or down. Many are available in different metal finishes.
Sconces mounted either side of a mirror should have their light source positioned at 66” above floor. This positioning produces the least amount of shadows.
Both the size of the mirror and the size of the room must be considered to determine which is best for your space. A smaller powder room will look best with a 2 light vanity light. With two sinks on the countertop, mount a 2 or 3 light over each sink. Whatever you choose, just remember that the width of the vanity light should not exceed the width of the mirror.
The light of 60watt lamps, 800lumens, is enough to see yourself in the mirror without being too bright..