Awesome.

I'm a huge fan of Bach myself, and this does sound like something he would write.

A few elements of Bach I think you missed out on here:

Normally he would have one key dedicated to playing off the beat, where melody would be on counts of 1, 2, 3, 4 and the offbeat in between, normally a middle-range note that reflects the key and changes on occasion. Also, your piece lacked treble. A little bit of ornamentation on the right hand never hurts.

Also, I can almost hear an awesome second section coming after this ends, this would make a great intro to a larger scale piece.

Great piece. You seem to be very good at barouque, I can recommend a few people you should listen to to hone that talent and help develop a more solid style.