I love this and think you should keep it as one. I totally see the Thomas Bros inspiration. And if that was the inspiration, then you must keep it this way in my opinion. It's so original and it's not too much on one piece. It breathes between with the sparse sand parts, then the waterline. It's really, really cool. I have a whole series on the Thomas Bros book pages, so I love this idea. They mean a lot to me and people seem to love them.