I would suggest something to indicate scale, something in the foreground that has recognizable size, like a coconut as mentioned or palm branch, to show that the island is tiny. I'm a geology nut, so I have to say that the volcano wouldn't be new, as it would have had to start at the ocean floor and build up. But the island could be new. Perhaps it's a depiction of Loihi in 50,000 years? (the next Hawaiian island, 900 meters below the surface right now) I like the reflection in the water. It looks fine to mee for a small island. Since it has solid rock already above the surface, it's not BRAND new, so would not really need huge waves. Oceanic volcanic eruptions are relatively mild, so there wouldn't be an accompanying earthquake. Has to to with the type of lava, and relates to why Kilauea has been erupting continuously and peacefully since 1983. The few earth-shaking eruptions in the ocean tend to make older islands smaller, not larger (Krakatoa). Yeah, I'm a nerd LOL