Yeepee, time to
ruin someone's ego give constructive comments about a music
First of all, I'd say you're on a good way and I think that the flaws I hear in this song are the type of flaws that will simply vanish away with practice.
Next good thing is that you captured quite well the Uematsu feel and it pops very quickly as an influence of yours so you can consider this a success.
Now about the flaws : the first problem I hear is the samples' quality which is pretty low. Your brass sound is especially cheap and only the Hammond Organ wasnt too amateur.
About the instrumentation, I'd say that there's one missing layer or something like this. There's nothing between the bass+drum duo and the lead tracks. The overall thing sounds a bit "empty" because of this. The bass-brass duo bit especially suffers from this lack.
Regarding the composition, I think that percussions are your weak point because they sound a bit messy, esp. in the beginning (it gets better at 0'50 though).
On the other hand, the tune is easy to remember so that's a good point for you =)
EDIT : While we're at it...a WIP of mine. CC is very welcome
http://fil.razorback.free.fr/n3.mp3