Have you switched your Facebook page to "timeline" yet? If so, you're probably aware that brand pages are also switching over by March 31.

Harry Potter Wiki Facebook is in need of a cover photo and we're asking YOU to vote on / your create your own.

We're going to run a little contest to see who can come up with the best cover photo and vote one to the top in a Top Ten List.

You have one week until March 23 to create a picture and submit it in the comments below. The optimal dimensions are 850 px x 300 px but it doesn't have to fit exactly.

Then we'll create a Top Ten List of all your pictures and have the community vote one to the top!

We can't wait to see what you come up with, so start submitting!