[header] How to decorate a school locker for a birthday [title] Ask your school about rules for locker decorating. [step] You wouldn't want to start decorating just to find out that it's forbidden. Are you only allowed to decorate the outside of your friend's locker? Only the inside? Find out about all rules so that you can't get into trouble. 
[title] Make sure you've got the right locker number and the right day. [step] These would be big mistakes if these were not correct.