Yeah, I do have one prepared from last year. It's good to hear the lesson isn't mandatory; didn't think it was.
And yeah--on the makeup, I pretty much was emphasizing tastefulness, I.E. don't cake it on, and don't overdo color.
For the interview, I thought the best thing that helped calm me down and find an objective once I reached the interview stage was reading over my SoP over and over to make sure I was prepared to explain/emphasize what I wrote. Isn't it true the interviewers have copies of your SoP in front of them as you're interviewed?