Developing Your Premise into a Story
As you can see, the possibilities for premises are limited only by your imagination. Once you have a premise in hand, you need to ask yourself some very serious and objective questions about how the film will be made.
The first question that you need to ask yourself is whether the film can be made at all. If it's a story about fish, for instance, you may need to animate water. Ask yourself if your software is capable of handling the types of shots and characters that the premise demands.
You also need to think about length. Some stories cannot be told in a few minutes, although you'd be surprised as to how much you can cram into that a span of time. Simple is usually better, however. Typically, this means focusing on one set of characters, one motivation, and one set of conflicts.