I love the little chromatic descent at 2'55", the little variation that makes the music sound professional.
You put cat samples, did you?
Frankly, for a first in this style, it's excellent, you've got a great groove and a great use of synth/jazz sounds.
The small negative point is the kickdrum, which sounds a bit sharp to me (too much high in the kick?) and/or maybe a bit loud.
Otherwise, everything's great. The melody, the space for counterpoint with another instrument. It's remarkably well composed.