Is that Guybrush Threepwood on the right? It definitely has a bit of that Monkey Island vibe -- especially with the, erm...monkey -- right there in the foreground elements.
Though I suppose it could be some other arbitrary pirates on a completely random island that just happens to be populated by primates.
I really like the colour palette you chose for this; a wide array of earthy browns, greens, and yellows, as well as a bit of strategically-placed purple. Quite appropriately adventurous and piratical, not to mention a fantastic piece of art for Pixel Day! Very nice.