I outsource that. I find 3D design sculptors on Upwork and CGTrader and tell them what I need. When I'm satisfied with the result, I send it to my 3D print guy

I outsource that. I find 3D design sculptors on Upwork and CGTrader and tell them what I need. When I'm satisfied with the result, I send it to my 3D print guy who makes a print for me.