I ended up editing out Harkness because I decided he wasn't main stream enough for t-shirts. I posted the picture up on my facebook and got some feedback and here's the final image.
As you can see I added some other captains to round out the roster, Jack Sparrow and Kirk.
The t-shirt is available from my Redbubble Shop along with my Firefly Series.
If art prints and tote bags are more your style - check out my Society 6 shop. 
