I may have the place for you, then. I am a moderator (one of many) of a community which is just getting off of its feet.
ocsenshixchange is an otaku senshi fanart/fanfiction exchange community. There are monthly exchanges (artist to artist) and mid-monthly exchanges (author to artist). Our first monthly exchange is currently underway, and signups have just begun for our first mid-monthly exchange.
Basically, if you have an otaku senshi (or even if you don't) you want art/fanfiction of and wish to draw or write about someone else's otaku senshi, this is the place for you. It's a great place to flex those little-used fanart/fanfiction muscles. Won't you join us?