Hey, for my quinces im also having a cinderella theme. My parents and I will go to the Cinderella Castle in Walt Disney World to have my pictures taken there. My dress will be baby blue and I will have a prince, which will be my closest guy friend. Well I suggest that you get little glass slippers as your party favors. Also, if your dress is also baby blue, then you can have your main colors as blue, silver, and white. Which actually looks really good. You can decorate the room with balloons of those colors and have beautiful flowers as centerpieces. You can decorate the room with white christmas lights which will give it an elegant look. Well hopefully this gave you some ideas for your party... GOOD LUCK!!