Wedding reception decor?

I have no idea where to even begin decorating the reception hall. I'm wondering if anyone has pictures of their reception? I would love to see what others have done! I'm also open to suggestions. Bridesmaids/Groomsmen are wearing an apple green color. Flowers and some accents are light pink, peach, and ivory. Are ice sculptures too overdone? What are your ideas on balloon decor? Thanks!! Oh, reception is in a ballroom at the Hilton.