What did you learn?
Do not change the draft (or idea for the project) that the client already confirmed.
How is it going to help you?
If I really have the new ideas for the project, I could do the draft first and send it to the client, but do not throw away the draft that the client already said yes.
What do you want to learn?
Illustrator (drawing skills).
How was it working in group?
Different person has different point of view about the project so that it helps to make development of the project.
Did you get to know your partner?
Most of them are good at illustration, and have the fancy and awesome ideas.