Well done! Another brilliant piece from you. I too want to write an oboe concerto. Unfortunately, my flute teacher, who is a brilliant oboist, will be moving at the end of this month. I will not be able to give a finished project to her in person.
The many melodies of this piece are wonderful. I think, as a woodwind player, the difficulty lies in fast scales which are more difficult to produce a clear sound on the oboe because of the double reed. High notes are difficult to play controlled and even. The 'frightful' trills in the second movement are actually one of the best moments, but because the oboe has been trill keys, they are having to change fingers completely.
Thanks for sharing your music!