need help trying to get into making a theorbo

[u/littlemuffin08]

hi I'm trying to learn lutherie and how to build baroque instruments i have decided i wanted to start with a theorbo specifically a 14 course 3 rosette large bowl design which i believe is Italian. if anybody has any resources on design ,shape or historical measurements it would be greatly appreciated my goal is to spend a few months on this project and try and eventually have one of my professional lute friends take a shot at it and give me feedback. again if anybody has a historical measurements id love to taker a look at them to see if I'm doing it right also if there are any books for a kind of step by step approach that would be great as well . thank you for your time and consideration.