banner on top that can be done a little bit narrower, but it is not clear that the content beneath it
The top banner is huge not good, the art on the website posts is big too and is not the same size, try using the same size for the art in the posts of the main page. The colors of the website are great. the designs r good too and the idea behind is solid. I like the idea but the layout is a bit rough. Good luck with your website!
I like the header, but it should probably be a bit smaller. I think I just reviewed one of your other sites, as this is the second site I've seen with the banner ads between the titles and text of the articles - I don't like it, I think you should put the banner between the articles and a different width, to make scanning easier. Also, the navigation bar looks a bit odd - I'd take out the ad and move your tagline onto the image at the top of the page.