1. T-shirts should be sexy (the colors, the combinations, the overall aura).
2. Keep in mind that t-shirt is going to be worn - by men only; of heights around 5'8''; muscular / slim fits.
3. Do suggest what your design can be paired with for a sexy look (bottom wear, accessories, jackets/hats. etc)
One of the below
1. We welcome your ideas.
2. Superhero theme. (Known in US)
3. Music bands (Known in US)