Focus Group

I have shown the rough draft of my film trailer to a focus group of my peers, both media students and not media students, and asked them to give me some constructive criticism as to how it could be improved. These were the results:
"It's really cool. A good soundtrack would be good, though. You need to build up suspense more."

"Put another underwater shot in; they're really creepy!"

"Faster editing and a bit shorter; it's too long for me."
"More black slides with more mysterious stuff written on them!"
"I want to see that movie!"