Mike:
For a first timer I'd say you did OK. Hockey is a tough sport to shoot especially when presented with the dark, dingy arenas most recreational and minor hockey is played in. I have shot a ton of hockey over last winter and learned a great deal from folks on here. Generally here are my starter settings for most rinks (with 40D and 70-200f2.8L):
Shoot in full manual mode
ISO - Usually 1600 or 3200. Rare is the rink where I can use 800.
Aperture - Almost always f2.8 but as light permits sometimes f3.2 or f3.5. Hardly ever get to go to f4
Shutter - Again, try not to drop below 1/400 for recreational or minor hockey. 1/500 preferred where light permits.
Depending on light, I will monkey around with all 3 of the above to see what works best for that rink.
Use a custom white balance shot off of "used" ice. This helps reduce impact of color cycles in the lights.
Use AI Servo focus and use the * button for focus (Custom Fn IV...search for threads on this if you don't know what I am talking about).
It looks like you had a good position in the stands to shoot over the glass. Sometimes you can get excellent results standing at the end of the rink and shooting thru glass at players coming at you (as BassB suggests above). (EXAMPLE
)
Ideally you want to try and capture eyes and faces of players in shot and puck, so look for best positions to do this. Being up high in stands is sometimes not conducive to this as you are shooting down. Try and get access to the penalty box if there is no glass on it (use caution though during game!), or if it is a fun mens game, ask to go on the bench.
Try and anticipate the play. For me, given that I play and coach, this is easy and I often have my lens pointed in the right spot before the play gets there. For you, this will take some time to learn, but it can be a valuable talent to pick up.
Post Processing - Shoot RAW if you can and then plan on doing PP of most images, especially to brighten them (as even with 3200 ISO and such you may still find images dark). You will also likley need to apply a touch of NR to them. I use Adobe Lightroom for processing and I find it to be good in this regard.
Again as Bass suggests, crop your images tighter to focus on the key player(s) or action and eliminate background clutter .
Other than that, just keep shooting and posting. My shots improved dramatically over the course of one season and I am sure yours will too!
Cheers!
Chris
PS: See more of my most recent hockey shots at www.cjscons.com/stars