My first impression of the index page was everything feels to cramped. Try some more spacing between your featured content scroller and the content beneath it.
Also, the “read more” boxes, the text is weak, try bold or a different font.
Going through the rest of the site, a lot of elements don’t line up very well or look awkward.
Take your blog for example, the post titles are really small, the date really small and then the category and tag links are larger than both of them.
Work on getting the details and the small stuff looking great, that is what really makes the difference when you look at the really great themes.
I think you should create another logo, the logo is the first thing i notice and i think you could create a better logo for this theme , i know the user can change the logo easily but i think is important the logo in the preview theme.