i like it!! the island makes a good focal point and i like they shade of blue of the water and the reflection of the island. If you want ways you can improve i think maybe you should add reflection of light onto the water, or find a way to make the blue of the sky and the blue of the water contrast more? i think its good work
Looks nice! This has already been stated before but I would agree, there should be more contrast between the sea and sky, perhaps a color shift of the sky?