From the article Confessions of a Necromancer: if you have the trust of your client, and s/he has real power, you have done half the work already. don't make stuff and then try to sell it unless you are growing an existing client base. breaking into markets you don't know is probably impossible. Build up trust with the client and sometimes they will reward you for it. When you've paid for all the mistakes, you should…
It's presumably the parent's tribute to him, which I can appreciate.