Take a good look at it in Atticus before you make up your mind. Writing assignments should be double spaced with plenty of margin room for my comments. Plan on revising every assignment at least once. Rewrites must always be accompanied by first drafts. It is your responsibility to plan your life so that you can complete assignments when they are due.
Plagiarism is a serious misstep.
Make sure you understand what it is. This will give you an idea what science writing is all about. Read the NYT Science section every Tuesday. Write a review of a popular science book. There is a section of the SciLi devoted to books like this.