Orchestral Suite No.1 in B (I. Overture)

Clearly you are quite skilled at counterpoint and have an excellent grasp of the overture form, going off my initial impression. The introduction is characteristic of this genre around the 1720 mark by my reckoning, reminiscent of the work of Fux and his contemporaries. 

The Allegro, whilst a commendable work in its own right, could have more flair. That is obviously the next step for you, and once you are there you will be composing quality works on par with more sophisticated repertoire from this period. Zalenka is of particular interest to me, due to his impressive innovations. His work is mostly neglected as the bulk of his work is liturgical. He did however compose a series of concerti and trio sonata's which are of first rate. Here is an overture of his, written in the 1720s (please correct me if I am wrong on the date) that should demonstrate the potential of this genre.

Parallel dissonances between bass and melody near the end of each theme.
Cellos can't play low B.