I think Penn-Foster gives the student way more latitude in what is acceptable to submit as a finished drawing than some of us might. I've seen images of drawings posted where I think the student should get a grade of "C" only to have the student come back and say they got an "A". I guess I must be too picky. LOL
I wish you well in your completion of all the projects. Stop by anytime with more questions if and when the need arises. Good luck.