Cancel collection request?
I was trying to report a submission, and misread the various buttons and accidentally sent a collection request. It's not something that I want to have in my collection should the artist end up approving said request.
Is there a way to see my pending collection requests and remove them?
You can remove it after collecting it. It is under Settings -> Accepted Collections. As far as while the request is pending, I am not sure. If the art had nothing to do with you, then the artist probably won't accept it anyways. Or at least they shouldn't...