Hey, it doesn't look any bad.
I have a comment though. It looks really dark to me. Let me explain:
My monitor is calibrated for printed design. This is darker than usual.
If your monitor if not calibrated (most are not), you might see everything lighter, so you design darker. But when someone with a darker monitor visits your site, they will see it pretty dark. Does it make any sense?
So an intermediate brightness will be convenient. In my opinion, a bit more bright wouldn't be any bad.
Moreover, if you'd like to easily calibrate your monitor, you can do the following:
-With photoshop, create a totally black image
-Adjust your monitor's contrast to 0 (zero)
-Adjust monitor's brightness slowly until you see your image as black as it can be.
Well how was that for an advise?
Regards!