You've have beaten me to submission and I apologize for diving into doing something without already having expert knowledge.
I was asked to make a tsuba for a friend who owned a katana which had the tip broken off, the edge had been ground with an angle grinder and the tsuba had been brazed on. It was completely ruined. I could have told him to throw it away or do as he wished. I've been making knives for 30 years and been grinding blades with natural water stones for 15 of those so I'm not a complete novice in this kind of work.I researched every step as completely as possible and took about 9 months to get together the materials and knowledge to try. As Ford said, don't ask questions, just do the work and then you may have enough knowledge to know what questions to ask.
I had no timeline when I started but was getting close to completion in early December so said I would have it finished for Christmas. That's when I got myself in trouble running out of time with the kusune.
Regarding the consistency of the kusune: I don't know if it was exactly the right consistency but from reading and watching videos of tsukamaki-shi, I can see there is a very small process window in getting the consistency right. It went on in the same way as in the videos so I can only assume it was close. I really don't know.
Regards,
Garry