Yarrrr! This be a mighty fine Mii!
At first I thought, well, I would lighten up the skin tone one shade and also maybe change the thick-dreadlocks.
But in thinking about it further, because of the constaints of Mii attributes, I think the creator made some good choices. If the skin tone was made lighter, the Mii might lose out on that severely-sun-saturated and ragamuffin feel.
Also, no doubt about it, Jack Sparrow rocks tight dreadlocks in the movies. Although the Mii dreadlock style contains thick dreads, it’s probably the best choice because you’d lose out on that needed gnarliness if you went with some of the straight hair options.
And nice choice of eyes that include Jack Sparrow’s eyeliner!
I might just bring the size of some of the features down a bit.