I just added a few small details really. On the porch I added the light beside the door. It has a nice patina from exposure to the sea air. I also added a hook to hold the "real" life preserver so it's handy for those trips in the boat.
I made a braided rug for the living room. I like it much better than the original fabric one I had in here. There's also an oversized mug of tea on the coffee table. I'm thinking I should add a pair of shoes on the floor as if they've been kicked off before getting comfy on the couch with a book.
I have all the major elements in place but it's fun to add all of the little details that make it look like someone really lives there.