Since this is still an English class, however, content is king. Unless the design of a Web page enhances its impact on a reader, I will mainly grade the textual part of your work. By all means, experiment with graphical, auditory, and other multimedia elements where they add content. Don't add glitz to impress me or the rest of your audience. Your writing must be grammatically correct and stylistically appropriate.
Audience really changes for Web pages.
Consider your audience anyone who might have an interest in your topic or in this class. That doesn't mean, for instance, summarizing every point an author makes when you write a response. It does mean providing a more general context for your work than might be true in an off-line version of this class. Don't leave the audience guessing who you are. Don't leave a subject line blank.