Hi @hw1234,
I think the music has some grammatical sense here with the use of bridge in b,15 and the use of similar accompaniment throughout the music which creates good coherence here, good job.
B.3 and b.7 should be changed to a F minor accompaniment. B.12 and 13 should ends on the root position of the C minor chord, which is, C, instead of a second inversion G if you want that sense of cadence and finality. B.15 should have an F for the bass.
The most important feedback is, of course, to extend your music more!!! This is one you should listen to since it is repeated so many times not from me but also from other members! You have many good initiations of ideas but seldom development of it to create real music. They are more like musical sketches but not music itself, and what you should do is to develop and incorporate these sketches into a meaingful whole of music! Keep working on that!
Henry