Hii . If want to join a signature campaign . you should know what are the policy of the signature camps. And I think it is hard to join a campaign . because the manager of camp is need your good and high quality post before you join the signature campaign . and sometimes it takes weeks or months before you accept of the manager . just wait .
Yes, indeed some of the campaign that has the famous manager too difficult to join because the campaign has several requirements. But I understand, if you are not accepted by the campaign will be immediately notified and did not have to wait for months.
therefore the quality of the posts are very important, you can be accepted for any signature campaign with a high rate.
because maybe now and in the future will be very selective to join the signature campaign.