You can add or edit an existing profile picture by clicking your avatar image in the bottom left-hand corner of Timely. Just select Edit my profile from the drop down menu that appears:
Then click Profile > Add Photo:
Picture dimensions must be at least 200x200 pixels and less than 2mb.
If you already added a profile pic, you can Replace or Delete it from here too:
Success! Your mug is now plastered all over Timely.