Ok. Some bounty programmes allow junior member to participate. Apart from filling google docs and writing post what should I do?
Nothing which campaign you are going to join they should have mentioned that Avtar only for the users who are able to add it and only from Full Member account Avtar option is available to add.
For your future reference to add Avtar, go to profile and under their on the left side click: Forum Profile Information and in that on top you will see the AVTAR opp to it GO HERE link is their when you click, the new window will open with option of choose File and below that upload. first click choose file and click the avtar jpg or pnp and after that choose upload and that all your AVTAR is uploaded