I think to take part in a campaign signature usually Jr. Members upwards, but there are developers who make rules to participate in Signature campaigns must have a rank member up, if in my opinion you should be patient first, and often active in forums and often post in the forum, but do not originate from the theme In talking about, the higher a person's rank the higher the prize he gets, for example the rank member and rank of the Hero, surely the Hero rank that gets more prizes is compared to someone who ranks the Member, and to get rank we must often be active in forum, maybe for now I can advise you to be patient, and often active to pursue rank first, and if your rank has reached a minimum of Junior Members you can only follow the Signature Campaign you like.