Have you tried reading this?
That sticky thread and its links explain everything.
TL;DR: You don't upload yourself, that's the job of the Uploaders. You make a request in the Request Forum in the right format and Uploaders take care of the rest.
But since you only want to share a few teaser pics, no, they don't even go there then.
Post a thread with them in
General Discussions or
Off-Topic.
But seriously, why do so many people have trouble checking out sticky threads? Or do they just want someone to explain it to them?