I thought about the same last week. I've found a better way for anyone to upload his work, My Idea is to have a site similar to the sites: linuxmint-art.org and ubuntu-art.org...
I've contacted someone from Mint and he told me that the site is maintained by opendesktop.org . He also told me that he thinks that they'll be happy to maintain a similar site for Fedora, and suggested that i contact them through the form on their site. So I did, but till now i got no response.