Max
Nice tempo work in this. It is always nice to see a new composer not be afraid to use tempo changes in his piece. One thing you want to add to the score is the tempo in the very beginning.
When I first started composing, I did the same as you have, which is the same most new composers do. We fail to add either bowing marks for the strings, or in this case, tonguing notation for the all of the winds. After studying numerous books on orchestration in which all of the authors state that new composers should always include bowing marks and tonquing marks, I finally understand the importance of the new composer doing so. It forces you to think more deeply about what you are asking the performers to do and makes you thoroughly think about each note being put on the score. So I highly recommend that you start adding these articulations to your scores.
As Jason said, a mp3 will always get your ideas across to our members better than a general midi file can accomplish, so a mp3 would be nice.
Ron