Island Background (Sample)

Artist's note: Just trying to be diverse. One of the things I'm weak in is landscapes. I would like to improve on this. So words of kindness and yet critiquing with it would be nice. One thing I hear a lot is that the island looks kind've flat. It was like that in real life then the island shouldn't be able to survive it would be taken out too quickly by  the water. I will fix that in the long wrong. Any other word of advice would be nice. ^^ 

(c)