placement of nav bar is always better at the left... its a little too blue for me...add another color to compliment the other...
your placement looks good but if you add a sqaure ads unit between your blog posts may be a good placement for you
It's a nice blog... But the colors give me a bit of confusion (just my opinion). Which keywords are you using in your main title and description? You must know keywords can be placed inside every post of your blog. This will send a bit of extra-traffic to your blog from search engines...
You definitely need to get some ads between content. As it is right now, you don't not have any ads above the fold (on the screen before scrolling). An ad right after the first post would probably work well.