Not bad for a first tracked piece. However, here are some tips for the future:
- There is a stark contrast between "realistic" sampled oboe phrases and e.g. the single-sample piano. Pianos are the kind of instrument that almost never sounds good if only a single sample is used. Having at least two samples per octave is recommended.
- The structure seemed a bit random, with no clear connections between the various parts of the tune.
- The rest is fine.