No problem. I watch more game trailers and advertising than most people will in a lifetime. I am a hardcore gamer on all platforms and if you stick to a “less is more” approach you will attract more interest.
Some iphone trailers are 3 minutes long, which show a person playing the game, and not really highlighting any features.
Here is the trailer for TinyWings
http://www.youtube.com/watch?v=VUnlE4cGgz0
Notice the pacing of features, not too long, nice pause between, good production - you “get” what’s happening and go “Hey, that looks cool, I want to try it”. For me and my short attention span, that was a miracle lol.
Looking at that above, you can see the following wants that I like, pretty much match to some degree.
What I like to see is something that will keep my attention something like
Intro screen, maybe a story
Then a short description of the adventure. A couple of seconds of gameplay for one feature, then another with small captions you things like
“Intense gameplay” (flash the video for 2 seconds of a hectict scene)
“Easy to play” (flash the video for game mechanics)
“touch the clouds” (obviously from the tiny wings trailer)
Pretty much you are highlighting goals without saying “YOU MUST DO THIS”
etc etc. I think of it as an elevator pitch - if you can’t describe something in 30 seconds or less, then it’s too complicated hehe. I’m very short on attention (most gamers are) if I smell lame or over complication, I just move on and not think twice about it. It’s like visiting a website, when you want to search for something - I don’t know about you, but if I feel like something is clunky/navigation is STUPID, I leave and don’t think twice.
Those are just my strong opinions on it though, so obviously do your research 
Jeez that was a longer post than I wanted, but I’ll calm down now 
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