I honestly really liked what you were doing with the piece, the ideas and textures are nice!
My two criticisms would be that you want to support your melody a little bit more since whenever it gets passed around it still feels thin, especially with how Latin this feels you'd want things to drive a bit more. The other criticism would be countermelody, or at least harmony outside of just chords, it helps add flavor.
I do really like the piece though, especially when it gets to the more aggressive parts with the timpani, it still feels and sounds great!