Locker Decorating!!!

My friend's birthday is coming up on Sunday so me and some of my other friends are going to decorate her locker! This is my absolute first time doing anything like this. Well, I have made a lot of cards for student teachers that were leaving. I never did it alone, I always had one of my BFFs help me. She's really artistic and I just help. We did a huge banner our school's Journey book. Before it was just going to be me and one of my friends working on the decorations but then a lot of other people also wanted to help. I tried to have fewer people help so people won't get bored. We were supposed to get it put up today but we didn't get signatures or finish drawing everything. It's postponed till tomorrow. We have to put it up after school so our friend won't see it until Monday. It's so sad that my birthday's in the summer.