Lost to Edwin 1-2
He played an aggressive tri-color deck, and I didn't trade creatures. My board presence was better, but he was able to quickly create threats, use them, and then finish the damage later in game. I tried too much to ramp and didn't swing with Shanna. A few extra swings with Shanna probably would have made the difference, but I wasn't willing to trade her.
Lesson: be willing to trade creatures. They're a resource (and valuable) but not trading them can lead to a much more threatening place for the life total.