You were just contacted by someone claiming they were willing to do fan art for you, but it's a scam. Many more of these "artists" have been popping up on websites such as Fanfiction.Net and DeviantArt, and now they've spread to here. I promise you if you search for fanfic art scams, you will find almost the same copy-and-paste speech they sent to you and me.
While I, for one, will not be entertaining this drivel, if you still want to work with people like @marryocs27, then that is your prerogative, and all I ask is that you air on the side of caution.