Need help making money for golf clubs.?

Okay I'm 15 years old, and I am an avid golfer. My family can't really help me out with buying new golf clubs, and i need help making money in order to do so. BTW, my current clubs are terrible, and they are not appropriate for my skill right now. They are for people who are just getting started, and I need some for a golfer who shoots 36-37 consistently. So could anyone give me some tips on how to make about 300 - 500 bucks pretty quick? Thanks.