Adding new lighting to a bathroom can immediately update the appearance and make it look more modern and bright. If you are completing a full bathroom remodel, then you want to tie it into the other elements in the room such as countertops, backsplashes and appliance colors. The most important thing to take into consideration is what type of mirror you have especially if you want to install the lighting above it. For instance, if you choose double or 3 way mirrors there are many viewing angles to consider as well as the natural light, if any, that you have in the room. It may be that overhead lighting or sconces would be your best bet if you have considerable shadowing in the room. Adding simple lighting fixtures can be done by the individual, but if you need additional electrical wiring, your best bet is to contact an electrical contractor.
On this page of RenoCompare.com, review pictures of bathroom lighting installed by other homeowners and contractors. Get ideas for your own project, or share a completed project of your own.