If you have to ask, you're not ready to participate in a signature campaign.

The key thing to getting accepted to a campaign is having a history of commitment to contributing positively to this forum. Participating in a signature campaign is a privilege, not a right. You earn that privilege by posting constructive comments, every single time. Contribute to conversation. Create conversation. Don't repeat that which others have already said.

If you improve your posts you'll have a much easier time getting accepted to any campaign.