Note: each collection does not have to include only one medium or only one formal element. Ideally, we do want just one type of medium and just one type of formal element described. What you can do, is create a either a collection of all the same media and different formal elements, OR create a collection of various media and the same formal element. This will provide a “do-able” challenge!
Your summary (all 3 points below) may exist in a word type doc or directly typed into the “Rich Content Editor”