Not exactly sure if this will help or not and not judging you at all. Most of us have something that others might think is an odd turn on or not. Finding others that share these things whether considered fetishes or not isn't always easy.
But coming to a site like this just for fetishes or sexual interests probably won't work. Asking people on such a site to pose for pics is a bit much as well as this site caters to many things and sexual interests is just one amongst many.
You could look up "Women looking sexy in jeans" or even simply "Sexy Jean Pics" and get it easier without others getting involved, but that might not be to your liking. If you're looking for a more direct way to interact with people of like mind, you might do searches for groups that would cover your interests.
But when anyone comes to a site that is as vastly spread out as this, you will get those that either don't understand or don't care. You're not just sharing your interest, but asking for others to get involved and supply you with something.
Again, in no way am I judging you or putting you down in any way, but just trying to help in the only limited way I might. I do wish you the best and hope you find what you're looking for.