We need to see a photo or two. Have you bought the light fixture(s)? Ordinarily I like to have lights on either side of a sink, and if there are two sinks, then I'd place a vertical light between the two sinks and one on each far side. This can be done with individual mirrors or with one big mirror with holes cut for the light fixtures. The mirror company is used to cutting these holes. You can also place lights above each sink as you see in the second photo below.
Carolyn Albert-Kincl, ASID

The N street photo is of a perfect installation. Proper bathroom lighting is so very important. Let’s start with the shape of a human head itself. Our heads are tapered downward from our cheekbones. Fixtures that just deliver light from the top of a mirror; only illuminate the top of your head. They produce a distinct shadow below your cheekbones and nose. This creates a less-than ideal reflection of the lower cheek, jaw line and mouth. The image below shows optimal light fixture selection and placement. Compare it to your makeup area. Is there a difference? Talk about “seeing the light.” Thanks for asking! gary@ClearLED.biz