learning from partners

At this time's drawing fundamentals course, we need to finish an A3 work about drawing some furry things, like animals, toys and so on, by using the material like white charcoal or any kind of white materials. At first one I really didn't find out how can I finish a furry drawing by charcoal, which is very challenge, i can't change my mind from using black pencils to some white charcoal, and I can't finish my drawing. But after fewer practice and looking about how my roommate finish her work,I try more parts of not only draw things out, but to rub，and i works well. I notices the importance of learning from the partners which may helps a lots most of the times.