Remember when you started in the skateboarding park, you found something you liked and were encouraged to take it further. This is what you can help the campers do too, help them love skateboarding like you do. Plus you can practice your own skills and you’ll be skateboarding all summer from June to August - you won’t get better than that.
The kids won’t have the highest level of skill so you’ll need to be encouraging and hopefully they can learn a few skills from you over the summer.