Nice work, I love the way you did the water. But just some advice: maybe try next time to take a brush with more hardness grade for things that are in the foreground, like the dragon here. Otherwise, it looks like the dragon is "blurry" - which makes it move into the background too much
This is really spectacular! Im in the same boat trying to develop my digital art but it's not up to par like this.... hopefully I will be one day. I really like the idea as if the dragon was god of the sea and the texture of the raging sea is done well.