You would have to be accepted first, with a username like 'shapeshift' that might not happen.
I think you also need to have 140 activity, and you do not have enough activity yet.
As you can see , I can upload avatars since Im Full Member, Its not related with 140 activity.
But If you say , my account name is not proper for your campaign , good luck with your campaign.
I thought it was 140, maybe it is 120 activity then? My error, you are able to display an avatar, you proved it.
I will be honest with you, the username shapeshift is not something i personally like all that much, nothing personal towards yourself as a person at all though.
I am not sure if that username reflects smartcoin all that well or not though.
I haven't decided fully yet though, I will wait and see what some other members of smartcoin say to me about it.
You are still the first applicant, in this first smartcoin avatar campaign, and I would give you some smartcoins for that, but we are not allowed to giveaway coins on bitcointalk.
Thank you for applying