What a song!
But this is a review so I must give the bad news. While I don't play clarinet I spend lots of time around them and people playing them and I must say if you played more confidently (use more air) it would sound much richer and fuller. Also the ending seems rather abrupt, even though the end of the song is pre arranged you should treat this like it's a live preformance by setting up the ending with your improv; whether is be a fast run or a very distinctive rhythm. I really am digging your phrasing though, very stylistic. You get a 5 from me!