This is looking great, I don't blame you for wanting to move on to something else. My only tiny crit is the shore line, its too sharp (imho). I know your using the photoshop transparency technique, so I don't really know if this will work but could you add a very slight wet zone along the shore to help blend it in to the sea. Just the sand shader but slightly darker and extending up to a foot above sea level (or whatever scale your on) would do the trick.
Richard
