You can upload a new one, dislike the worse one and upvote the new one.

@abigailnankivell wrote:

Hi,

Hello!

Just wondering if it would be possible for you to remove a poster so I can replace it with a new, updated version?

I removed the poster here:

https://www.themoviedb.org/movie/1497678-your-choice

But I have to point out to you that TMDb does not allow entries for student films! There's a section in our "Contribution Bible" that explains this a bit longer:

https://www.themoviedb.org/bible/new_content#59f7933c9251413e9300000a

Based on your gofundme campaign and your instagram account, this seems to be a student film. I'm afraid the entry for your film will be deleted in the (near) future.