Sonata allegro exercise

I wrote this piece over the past two months as a sort of challenge to myself and as a demonstration for a few other people on writing pieces out of short themes. I think it's structurally a lot more complicated than typical sonata allegros, but I kind of got carried away (especially in the recapitulation). Honestly, it sounds to me more like the scherzo (third movement) of a four movement sonata rather than the first movement, and I kind of tried following the scherzo form a bit by introducing some new material in the development section.