So far not much of a standard has been set as to how to create a great movie with 3-D, but it's a very simple concept, just go by this one rule of thumb:
You can make a great movie better using 3-D, but you can't make a bad movie better.
Basically, the way to make a great 3-D movie is to make a great movie, and then add 3-D. now I know you're thinking 'well duh, that's why they call it post-production 3-D', yes, but what I'm trying to emphasize is the fact that the 3-D should not be the selling factor. It should, like always, be the quality of film-work, the brilliance of the acting, the perfection of the make-up, etcetera etcetera, all the things that make a movie great already with this beautiful technology added to create something truly spectacular.
So before you waste your money on this holiday seasons 3-D cash-cow (The Smurfs, Yogi Bear, Tron: Legacy) please note that you're supporting the downfall of great film-work as we know it today. Thank you.