Wow. For something that only took 2 hours, your Mastery of art shows. While im still new to art, maybe I could still offer critique ( So take it with a grain of salt) The only thing I notice that could use some more detail, is the transition between land and the ocean. ( Assuming the sand is not submerged ) The Sand looks rather dry, I would think that wet sand would be a bit darker in color thus showing where the water previously washed up. also it may help to add more foam to where the water is washing up. But these are just my thoughts. ^^I can clearly tell what all you've done to create the overall look, and I find it to be really cool. Its this kind of stuff I love to study, and learn from ^^