It is a nice clean design, and easy on the eyes.
One little suggestion? Limit the number of posts displaying on your front page. Since you don’t have much in the sidebar to keep it interesting ALLLLLLLLL that way down (and I’m partial to shorter pages anyway) I think cutting yourself down to showing no more than 3 posts would be a huge improvement… provided that most of your posts are about that same length.
Other than that, I do really like the clena design. 🙂