What is this madman doing setting up a beachfront shore in the winter? On a more serious note, I reckon you could probably spice it up a bit by using a bit of fencing to make an outline for the store, since right now it just looks like some crazy person has decided to hoard all their shells on a rock. You could also use a wooden shop sign to make it clearer as well, although that would require you making a custom design for the text, so not sure if you're into that sort of thing. Also more shell furniture like shell lamps, and even maybe some shell related mermaid items to show that she makes little knick-knacks and other items out of shells? You could even add shell dresses so it'd be sally sells seashell stuff on the seashore, hey look at that it still works. All in all though it's a very funny idea, and looks very quaint. It's definitely a good way to make use of these little rock areas (not sure what they're called lol).