I can't really give a proper critique because it seems a little unfinished. A couple things I note that I'm not too keen on are the font choice for the nav and the content needs to be broken down a bit. Unless you intend to make it a blog site, paragraph content should be kept to a maximum of 4-5 sentences. On the size of the site, try making the image 1000x and then using the 960x site proportion to give it some room to breathe.