Thanks, man!! There's so much I'd change, actually. From the top of my head, it would have to do with the scalar transitional material in the exposition (sounds a bit odd with all those leading tones for the top of the scale), the beginning of the development (too thin, a bit uninteresting), some other places that are a bit too repetitive, some changes of register that sound unnatural. That's all I can say for the moment, but I'd certainly find more at a much deeper look in the score.
Can you tell me your suggestions? Every external point of view helps me not only when it comes to this piece, but generally, as a composer.