erm...well.....its very blocky, but i like the hight of it, have it anykind of intinour decks? with cannons upon it???(intinour is not spelled correctly i know)
well good first try, try to smoothen out the stern, and use some regulary ship windows, like them in brick beards bounty, that would help alot, and make the stern railings go abit further from the ship, and make it in one color, also the platform's its placed upon,
and make the forcastle, needs more details, try to add some of these http://www.bricklink.com/catalogItem.asp?P=4460a and place em
into the wall. And the railings at the top deck, make it taller, and make it connect eachother, like i did at my Golden Whale:http://mocpages.com/moc.php/328292 .
and you should make it abit longer, so that it can fit its hight,
(this is only to help you getting better, its this kind of critic, that made me the ship builder i am today) besides all that i did mention, fine job,