Good looking horn you made there. You might want to keep that recipe for the osage wood stain. Real nice color.
Two things jump out at me that could have been done different. One, I think either iron pins or wood pins should have been used to secure the baseplug. The other thing is on the second photo, it appears the base of the horn is not square to the body of the horn, giving the baseplug an off center look. Else, real nice. Good job.
John