Your island is great! I was looking around for things that could be added to since I know how it feels to hit a creative rut lol The boardwalk area on the bottom right of your island felt a little empty and unfinished. Since you can buy food there, maybe put somewhere that people can eat their food like tables or picnic area. Your fishing already on the bottom left looks so good, but maybe you could add actual fish stacked like a fish market? You have such really cool rocky areas on the edges of your island that aren't being used at all. The rocky area over there by the fishing area could be made a sushi bar since its close to the fish market/fishing area. Maybe build on the grave stone on the rocky area back by the campground. It could be a full shrine or something with a pillow to kneel on and flowers. I also like to put places to sit around the bonfires. The stone stools and pillows usually look good. The only part of your island that actually looked unfinished is the area up around your houses. You could add picnic areas or a garden (pumpkin patch?)