I think you're on a great direction. The season if you could call it that last 6 weeks. That's 6 out of the 52 weeks that your team can contribute. You should defintly stress your accomplishments throughout the year.
Try to find a theme that will incorporate your achievements and connect them to your team. For example, if your team was the "DDRtists" and you hosted a marathon to keep kids fit, you could connect it with your team theme and stuff. I need to stop thinking about Dance Dance Revolution...
Try to brainstorm and write out all the stuff you wanna cover. Then, as you get started the ideas will come to you. My idea came to me when I got my sandwich from Jimmy John's delivered mid meeting. No,
, our CA isn't about that sandwich store. It deserves it though, awesome food.
Good luck!