If you want to increase conversions, make sure that people know who you are so they can trust you. A great way to do this is to include a picture of yourself. It doesn't matter whether you're camera shy or not, having a picture can increase the number of people who sign up. People want to know who they are giving their email address to.

Make sure you look professional in your photograph so that you come across as an expert that people can trust. This is also a huge part of branding yourself, which is a great thing for long-term profits.

A smile wouldn't hurt, either.