This is difficult because I too am just learning web design. Two things jump out at me... The use of color and the 'boxiness'.
The overall color scheme does not blend well with the colorful Take A Look At Our Designs banner. The color from the banner jumps out. The rest of the color on the site is boring in comparison. Also, though a nice effect in the banner, it is confusing. I offer no advice on how to improve this. Sorry.
The use of many boxes is overwhelming. That is, in my opinion, there are too many columns. Perhaps using rounded corners might soften the overall boxy impression.
Of course, this is just one opinion, mine. I too posted my first web site
http://www.spunchops.com, and have posted to Review My Site, so maybe you can check my site out and offer feedback. You know what they say about payback. lol
Also, be sure to check your site validates properly at
W3C. You have many validation errors. For instance, you are using 2 DTD's on the page. I suspect validation errors are causing slow loads of you pages and maybe other problems.
Regards,
~Futomara