17 yo needs money

Hi, so as stated in the title I'm 17 years old at the moment, currently doing my senior high school. Ive been messing around with WordPress for like idk 3 years now, making websites for fun and stuff. Now I want to make some money on the side and I figured that I could use my skills in WordPress. So the question is, how can I go about this? How do I find clients? What should I tell them to gain their trust? Etc

For whoever answering this post, thank you:)