WHAT DOES AFFILIATIONS MEAN?

It means what groups and organizations you are connected with or a member of. (strange question for a craft store app) Use your "best art student" to describe you are very good at drawing or painting or whatever it is you have experience with. Play up your talents for whatever position they are looking to fill. At your age they want to know you are reliable and trustworthy, willing to be there and on time when you are scheduled, ready to work and to do whatever is asked of you.