Hi @Cafebabe!
This symphonic movement is a joy to listen to! It's bursting with an abundance of drive and energy! I really love the many individual touches you put on the piece that aren't characteristic of any other existing classical composer, such as the way you end the movement in the last two bars.
The only critiques I can really have are nit-picks about the notation of the score. The piece is fast enough that it should be in cut-time. It would be wholly impractical to conduct in 4/4. Also, there are multiple enharmonic mistakes such as the C#'s in bars 13, 17, 40, 114, 118, and 138 which should be Db's. Also, the Clarinet can reach a low concert Eb in bars 58 - 59 and 61 - 62 so there's no reason why you would have to transpose it up an octave there like you do. I can see why that would be necessary in the recapitulation though when the same material is reiterated in the tonic key. Thanks for sharing this exuberant movement!