Ah. I didn't get that he couldn't use his hand to hold his dick while painting. In the pics that you have released it looks as if his arm goes down to do some "directing". But I slightly disagree with you about earning the right to touching his dick. His aim was to be able to cum, so having it in his hand whilst painting and still not allowed to get anywhere near an orgasm would have been even more torture. BTW  the statute of limitations for improper cock painting is 1350 years, you'll be fine :)