It's always possible to do better, jj, don't worry! 
Your mix doesn't sound bad to me, just a few things that I've noted:
- the bass is very round, it lives mostly in the low end but there's little transients, so I find it muddies things a bit and lacks a bit of punch.
- the LV is perhaps a little loud, which could also be what takka said about being a bit lifeless: the background tracks are masked by the vocal.
- horns could have a bit more presence and punch, they are lacking a bit of sustain, I think.
Oh! and the fade out is a bit early and rushed IMHO.
Your mix doesn't sound bad to me, just a few things that I've noted:
- the bass is very round, it lives mostly in the low end but there's little transients, so I find it muddies things a bit and lacks a bit of punch.
- the LV is perhaps a little loud, which could also be what takka said about being a bit lifeless: the background tracks are masked by the vocal.
- horns could have a bit more presence and punch, they are lacking a bit of sustain, I think.
Oh! and the fade out is a bit early and rushed IMHO.
"Music, in performance, is a type of sculpture. The air in the performance is sculpted into something." - Frank Zappa
Some air moved here
Some air moved here