It looks very professional. If I were potential custom, I'll trust your company to design site for me.
You tried to access the address http://www.1websitedesign.net/, which is currently unavailable. -Getting this error in all of my browsers(opera,IE,FF).
1 word for you...perfect Just add some words like "why people choosing us to design their website" to attract more attention
Professionally design layout. The orange color when hover on the top tabs looks a bit odd and difficult to read. You might consider changing the hover color. My humble 2 cents
Your website looks cool but i don't like the logo much and you should include your latest work somewhere at top right corner as thats the main thing visitors must want to see whenever they visit your website. Everything else is done nicely for sure Thanks PHYza
Very clean and professional - I like it. I'd personally advise changing the font that you use in your top banner, but I don't honestly beleive there's much else to improve.