How do you legally protect yourself as an 18+ artist?

Context, im Californian.

So I'm an adult artist. I make fetish porn for people. On my account, I have disclaimers that state that my accounts are for adults only.

Recently my dads been worried about the legality of what I do, because hes worried that a minor might commission me, and what might happen since I still live with him.

I havent been requesting ID up to this point, so I might begin to do that if needed. Im also likely to make a TOS to protect myself further. Because ultimately I dont think theres a 100% fool proof way to protect myself.

What are your suggestions on the topic?

My Dad is very worried about the potential legal repercussions of me drawing pornography, though nothing has happened yet.