Experiment with filters
Most people who take selfies also happen to have an app on their phones that can add interesting dimension through the use of color and light filters. Not every filter is right for every selfie, so play around with different options before settling on the best one.
The simplest filters are black and white and sepia. Even if you dont have an app installed on your phone, you probably have these features.
Other popular filters include those that make the photo look vintage, creepy, romantic, or darker. Feel free to test them all out and see which ones go best with your photo.