I must agree that the pages load too slowly – that’ll turn off many visitors.
Also agree that it’s a nice, clean, and simple design that is easy to grasp at a glance. Nice textures, good use of transparency too.
The bright colors in the background are a little garish for my tastes, but that’s probably just me.
If the goal of your site is to get you more web design customers, I’d recommend fixing the HTML errors (26 of them per the W3C, most of which are easily corrected) and the CSS errors (9 per the W3C validator; 6 of them are not real errors and the other 3 are easily fixed). The reason I suggest this is because, IMHO, having errors on your site sends the wrong message to potential customers. If I was looking for a web designer/developer, the first thing I’d do is check his/her website. And if I found a number of easily-correctable errors I would quickly decide to find someone else who is a little more detail-oriented and produces valid markup and CSS.