My first impression was that I immediately liked it. Good job!
After a few moments of taking it in, here's my view on what you should change / improve:
* Blog Archive Dropdown Menu (Found at the side)
It would be better if it was centered.
I like how your sidebar isn't spammy, with too many widgets and fancy stuff, but perhaps you should encorporate a more personal feel to your blog by adding a simple "About Me" to your sidebar to summarize the author?