My future performance in my new group

We are going to start a new term and a new task in the project and we changed the groups. In this third term we will have to make a robot.
 I think that in the old group I worked well but I think that I could do more and I will try to improve in the new group and involve more about the project. In this group I was the leader and I was the person that worked the most.I think that in this group it won't happen  and the rest of the group will work more than in the other group.One of the reasons that I think that it could be better is because in this group there is a person who works like i usually do.