you can become an H-"artist"
either just generate big tiddy anime babes for the flavor of the month and get paid despite blatant flaws in the process
or knuckle deep into it and do repainting and img2img on 3D models (koikatsu probably) and try and get specific styles down and maybe you might be able to charge commissions and make more money

that being said, I think PayPal is cracking down on R18 merchants, so that might be a difficult road right now （ ´,_ゝ`）