Epicyon [1] now has some welcome screens which appear after you log in for the first time, and these can be used to provide any guidance to new members and make it easy for them to add an avatar image and description of themselves.
For someone using the system for the first time it can be non-obvious how to edit your profile, and so the welcome screens reduce that barrier. At first there will be no posts in your timeline, and so there is also help text for each of the timelines.
The help screen text can be theme-specific so that you can customise descriptions in accordance with the theme.