paint cans popcorn cans, what's the difference?

So I am making a pinhole camera, and i've been trying to figure out what to use that wasn't a paint can because i want to make this project more difficult than need be, and also, i want bigger images than a small paint can, so i'm using a three different kind of popcorn christmas tin. i have to paint it black still, but i'll do them this week and have the images up by this weekend before spring break :)

here is my can

i just need to get the wooden part!

http://www.kodak.com/eknec/PageQuerier.jhtml?pq-path=11865&pq-locale=en_US&_requestid=23082

this is the website im using!