I recently did some work for Mowgli Surf, a clothing company based in California. They have a real love of hand-crafted illustration, and it gives their line a really unique aesthetic.
The color versions below are color versions for my portfolio, but the actual tee shirt will most likely be black ink over a color shirt.
I did a number of little sketches. Never having surfed in my life, nor even seen clear blue water before, I decided just to get a whole bunch of ideas out of my head based on videos of Australian surfers, and let the art director decide.
When working with clients, I try not to worry about if what I'm drawing is something they'll hate. It's better to show them the ideas kicking around your head and let them tell you if it's working or not. You could potentially be shutting down an idea they may really like.
If you live in California, check out their stock! I'm nuts over their blue polka dot sweat shirt ~