(This is a touch interaction, so feel free to open on your phone if you want!)
Tap the watch (on blank screen): The watch will quickly show you the time and fade away after a short time
Swipe up or down: The watch menu will pull up or down onto the screen
Tap an icon: Each icon responds slightly differently, from a waterfall effect with the alarms to swiping up within the music section if you really don't like the first song that begins to play. Again, this is to show a variety of different techniques more than anything.