We'd love to put a face to who we are interacting with!
If you would like to upload a photo of yourself or something that gives a pop of your personality, you can upload an avatar that displays on your profile and when you send a message.
As simple as:
Go to your account settings and in the Account tab click on"Upload"
Choose the upload option and be sure that the dimension limits are within the requirements (Accepted file types: PNG, JPG, JPEG, GIF with max size of 488 kB)