I went to slippery hill and listened to Wade and what jumps out at me is how he keeps his finger on the 'a' note while playing that figure on the coarse part so it just rings. I'm not getting that here but I do hear some open 'a' touches in the fine part that you could develop more. It sounds like you have the tune under your fingers pretty solid, and that is about a third of the battle. I couldn't say half because the battle is never won, the target just keeps getting smaller and moves more.
I'm going to get out my fiddle and see if my ears are getting that right.