I would like to post some threads with my thread designs on them, I need 1 merit however to post my images, how do i get this?
Yes you are right that 1 merit is enough to reach Jr. Member Rank and enable to post an image but What DdmrDdmr said you need to have an enough activities to Rank up. To earn more merit you need to make a constructive, and helpful post to gain merit also you must remember that don't try to copy from someones good topic and post it here it's prohibited.
When I read the title, I knew someone would give you 
Like what @yahoo62278 said that he is in a good mood then he gave 1 merit to Op. And also made me thinking That, why I am not creating a topic like this so that I get 1 
Just kidding.