The mom sent me this picture: http://andeverythingsweet.blogspot.com/2011/03/olivias-sesame-street-party.html, but only wanted a single 10" tier. She wanted the name on the sign, plus Elmo and Cookie Monster. So I translated a 3 tier cake into a single tier with a big cupcake on top. :) The cake was chocolate with cookies & cream filling, iced in vanilla buttercream and covered in MMF. All decor was fondant.
Keep calm and bake on.