There may be some carvers that don't like to be creative. Just tell them exactly what to do, and they'll give it a go. But, for me, I want is a piece of the carver's genius, some unadulterated creative freedom. Sure, I may ask for a certain sized bowl, or stem material, or just their own take on a particular shape, but I want the carver to feel like he has the freedom to work his magic. That's just me. Good luck, that looks like it will make a cool pipe. Briar works makes some like that already. Did you look around first? Just asking...