What do you have in mind for the style and theme of the t-shirt?
1) It would be great if the quote can be incorporated into the flag or sun, but if not, then some way of making it look like they're not just separate entities on the shirt. The quote MUST be on the shirt.
2) Make the quote the main part of the design. Do something cool with the font and then just tie the sun or the flag or both into the words. So make the whole design about the words, and the flag/sun are secondary to the design.
This quote MUST be on the shirt: "Purpose is the Reason. Passion is the Fire."
Somehow incorporate the quote into the Argentina flag/sun. You don't have to use any of the images included, but they're for inspiration.
What to avoid
We don't just want the flag with the quote above or underneath. The ultimate design should have some fusion of the image and the words. The theme of the event is "Passion", and the event is for entrepreneurs.