Our ideal school, my opinion of presentation

The other day, our group of class did a oral presentation of our ideal school, was be very good.

I think I did very nice, but i need upgrade the oral vocabulary because i think my public presentation are very good, I don't have nervous and I know I have to say

The other groups i think they did very good, but the presentation was little prepared and many people didn't know they had to say, but in general, was good