I guess here's some advice/tips on how to get in. Remember that your hometest drawings are just as important, if not more important than your portfolio. Just keep improving your technique and skills for another year, so you can communicate your ideas more easily in your future work. It also saves a ton of time later. RISD says that they like breadth, but that also does not necessarily mean variety in mediums (although that is nice too). For instance, I used all charcoal, but I had realism, abstractions, and conceptual work. Essentially, I had breadth within my medium, if that makes any sense. The NPD representative did say that he wanted me to have a piece of color in my portfolio, but I ran out of time, being the procrastinator I am... Go to a national portfolio day though! and do not procrastinate.