Fanfiction "advertisement poster"?

Hey. I've been Penulisan this fanfiction on deviantart called "The 'Perfect' World" and I was wondering, for anyone who has probably seen the story so far, do anda think anda can maybe make a fanart of something like a movie poster but for my fanfic? I've seen plenty of that type of art advertising fanfics and I was thinking that maybe it would be pretty cool but I can't draw as well as I can write.