Im a new member and i might make mistskes so Id appreciate it a lot if anyone could help me figure things out... Im eager to get involved, learn and of course earn...
You are a new member but haven't yet reached the required forum rank to participate in the signature campaign. As Ultegra134 has already said, you need to achieve at least a Member rank to qualify.
You can read more about forum rankings here:
Forum ranks/positions/badges (What do those shiny coins under my name mean?)