With the exception of my gender, most everything turned out well. I had on a puffy white blouse, a dark blue vest, and black pants, plus a extra sword necklace and crazy ring. My hair, when let down, is naturally similar to Dio's, only with more hair. And I taped a pic of Dio's logo to my chest.
The only people who knew who I was were two teachers. One called me Ronnie all day long and sang Holy Diver. xP
So overall, I say it was a success.