Not to burst your bubble, but those designs are, for the most part, just text [granted the Kamen/Flowers one had a little more].
I would suggest to make this more successful to spend some time with graphics. Do what most fraternities and sororities do and modify them[You're a Tridelt so I am assuming you know you know what I'm talking about]. (
Example and
Example)
And sure being original and creative is good, like your orbit ball picture on a shirt, but if you're going to do something plain, I would think about the above. And I'm not saying take the logos for face value, but make them your own. Rebrand TEAM logos. Instead of BMW logo use a FIRST Team's logo and play on that.
Pavan.