With a touch of modern but keeping all the baroque aspects.
Congrats, really a peace of work!
I would be very pleased if I have an oportunity to play this peace.
If it happens I'll let you know.
You're not completely getting the idea of counterpoint. You got the part about the different rhythms at the same time, but you need to make sure that the melodies make sense. Also, the dissonances are very uncharacteristic of Bach and for improvement on the harpsichord part, look at the Brandenburg concertos.
Even though its not completely in his style though, its still a pretty cool piece: combining modern aspects (like dissonances and irregular chords) with the style of Bach (in the first movement I might have heard some of the liveliness of Mozart too).