I think you can tell them kindly if they can help

Providing some help to the person

Suggest that everyone take turns doing the writing, and follow the suggestion.

By taking care of some ones pet

I  will said everyone listen this is a group work and our fellow classmate is getting frustrated  so all of us grab your pencil and help  him

I would tell my friend that she is doing a good job and has good hand writing. I will also help her write some but ask for her guidance so that my writing is also good. I would ask everybody else in the group to help with the decorations and borders so we are all working.