Violin concerto

Hi all,

My aim is to write a concerto in style Vivaldi. Does it sound convincing? What do you think about ritornello, doesn't it end too abruptly? What do I have to improve? It's not completed because I don't know if it is worth completing or bettter start again from scratch. Sorry that I don't have score

Thanks

ConcertoArchi.mid

And I'm sorry, I should have posted this in 'Incomplete works' not here...