User blog comment:Tysaylor141/Ques-ti-on/@comment-13446185-20140702133032

None of them, the only person who should work on the Dragonbone armor should be the Dragonborn. What you should do is have one of them train the Dragonborn in smithing, and then the Dragonbone armor would be the Dovahkiin's proof that he/she has mastered the craft.