I also designed another small motif to go in the screen area. There is a special character in the game named Pascal (otter). You give him scallops you find while deep sea diving for sea creatures. He will give you mermaid DIY cards to craft items or he will give you mermaid clothes (dress & shoes). He floats along in the water after you meet him, so I designed him floating. Yes, I’m aware that he is not to scale but he would be too small to see any detail on him so he is a little larger.
This is what Pascal (otter) looks like in the Animal Crossing New Horizons game.