If you see any problems in the following sentences, can I have your comments?

The class was well managed and students seemed to be more engaged in the class activities than I had thought. However, I seemd to dominate the class even though I had to explain rules in writing and I did not wait long enough for student to respond my questions. Another problem I noticed is that I did not correct students' oral responses and it's possible that i confused them. And I found I said 'ok' too many times.