Not sure where to start. Ok, firstly there is no real colour scheme in the design, before you start a website make sure you outline the colour scheme you're going to use and the target audience.
Why have you used black backgrounds for the text? That is VERY ugly! Also, due to the pattern on the bg, some of your other graphics are showing their backgrounds also (very bad design).
The mouseover buttons don't server any purpose, generally annoying really. I would lose them in an instance. The use of css for the scrollbar is very pre 98 and should not be used on any web pages ever again imo.
The text spacing, colour and general appearence needs work. I don't like having to scroll down whilst reading text, why not create a table for this information and house it on the left hand side?
Remove the stats counter, they used to be trendy and are ideal for your daughters britney spears fan club, but not for a professional web site.
I clicked on this link
http://watzz.multiservers.com/art.htm and almost had an epileptic fit, please do some research on colour theory for everyones sake! Very bright and hard to read, the use of so many animated gifs also has an effect on page loading times and general userability, not to mention they look pretty tacky.
My general advice. Take a look here
http://www.colormatters.com/entercolormatters.html and learn abit about colour theory and what colours look good together etc. Then check out here
http://www.htmlgoodies.com and learn about the basics of html. I would then suggest checking out this site
http://www.webpagesthatsuck.com and read over the articles and after all that have another go!
It's your first site, you're not ment to be a professional so please don't take anything i've said to seriously, i'm just trying to help you improve!