WOW, way to much adsense! I think that the color of the links on the sidebar could be improved. Other then that it is fine for a simple site.
Ok sort the header out, make the picture fit properly so it looks clear. Make it the width of the site and move the header text from the left and put it onto the picture using fireworks or something similar. Make it look cool as thats what people will see first. Sort the font out, make it one font size bigger, change the text to black, move the adsense to the right and have the main page text in the middle. Create a sitemap, homepage, contact, about, faq's Where's your description, keywords? Get verified.