Few ideas for our trailer - planning

We think the following ideas if we could according to our story of the trailer, include them in our trailer would make our trailer more appealing and attractive to our audience. This is some research and ideas we got from recent horror films:

• Heartbeat sound effects. 
• Camera panning slowly with constant dramatic sound. 
• Turn screen black - special effects. 
• Sound loud as the scene goes. 
• Video tape reversing creates a eerie sound
• Short scenes.  
• Minimise the amount of writing on screen as audience should understand by moving image. 
• Total text on show; approximately 3 time, e.g production log, film title and release date.