With a little bit more definition of detail, this is the kind of thing I would see on an album by Enya, or a medieval-sounding album. Think, a little bit more vigour on the waves, a slightly bold ship, a bit more movement in the hair -- it looks like one side is being carried by the wind, but the other isn't. The colours, however, are divine. I normally would associate use of blue and yellow with pieces like this, but you changed this for me.
I really like this concept very much. I might even try to derive something out of this, with your permission. No, not artwork -- but music!