Great looking pattern.
Before fancy packing tools were marketed, things like buttons, shotshells with the primer removed, old worn out 24k gold pen barrels:hehe: were the items of choice for burying more deer hair in itself.
To cement the tieing thread, pick up a dot of cement on the end of your needle bodkin and place it on the hitch(es).
Also, what Pete said about using different hair consistency is important. Remember the tail tip is far softer and more pliable than the tail shank.