Pity about that rejected card design, I liked how the lightning made way to shape a diamond in its path. But the card takes priority, however, so I won't fight your decision.
Your fb banner is a sight to see too. I like the smirk on froggy, and the meadow which the Y mascot appearing from behind. You may need to fix the extra shade around the X mascor since you can easily tell where it starts (it's a line/block through grass starter's hand), but overall, that's a solid image which is most appropriate for what's spoken about right now.
You may not pass.