Well here's my advice:
1. Remove the click through page at the start. It's utterly pointless and wastes the viewers time.
2. Centre the index page or at least push it to the right with some margin. Having the menu start right up against the left of my screen and then nothing but empty space on the right just looks bad and is a poor utilization of space.
3. Have the buttons change on mouse hover. Currently there's no visual clue as to what's a button and what's a picture.
4. Spread the buttons out equally or meaningfully. Currently there appear to be random spaces between some buttons and not others.
The colour scheme and general style is okay but hardly impressive. Black and white is fine and easy to do but it does make the sight a little bland. Depends what you're going for i suppose.