Filling Out Common App Arts Supplement?

<p>Hey guys, I just have a quick question regarding the arts supplement--under "Arts Medium," what are we expected to do with the blanks in each subcategory? Like Next to Visual Arts, there are categories like "Art Studio," "Drawing," "Painting," etc. and blanks next to them. The instructions say "Please indicate your area of interest and provide supplementary materials, as required," so do they want me to list the number of each category of artwork I'm submitting? Or something else?
Thanks for your help!</p>

<p>BUMP - urgent answer needed to this question.
Any one fill out an art supplement?</p>

<p>Also is it okay if the teacher rec does not have a signature?</p>