Opening and closing.

Hi,
Here,s a couple of alternative ideas for opening and closing.
Take a stationary motor bike. Run a camera, you can achieve this quite easily with a camcorder, along the highly polished chrome of the exhaust pipe. So you never see the bike just the reflection in the exhaust tube. The camera runs down the exhaust and into the darkness of the inside of the exhaust. There is an ignition sound, and immediately there is wall of mist and fumes travelling towards and engulfing the camera at 100 miles an hour. You now have a confused sinister environment to go anywhere. Our of the mist/darkness anything might appear. You could morph the mist into a thunder storm for instance.
You might consider not putting up opening titles. Just bang straight into the film content.
For the ending. If you take the idea of something melting or morphing into sand. You can pull back the camera to reveal that the pile of dust/sand that is left is in fact a part of a larger safe tranquil beach. Then write the credits in the sand, have then washed away by an ebbing wave, but run the shot in reserve, so the credits appear rather than disappear. They might of cause open in blood or some other slimey mess.
Just when the audience think the film is over you have the most blood curdling scream you can devise. The unexpected sound makes everybody jump out of their wits, and the audience is unsure whether the scream came from the audience or was part of the film. To give more credibility to the possibility of the scream coming from the audience you might link the scream with the sound of chairs pushing back.
d2s