If you look at the text o this particular button (same rule applies to all of them)
You'll notice that the text is aligned to the right? I personally think centralizing it would give it a better perspective. I would nudge it to the left a little.
Speaking of the logo and the comment I made about adding images and a slogan to give it some life. I knocked up a logo (1 minute job) which might give you some motivation to change it. It's a shame that you opted for text only when the top area is very nicely implemented which should be complimented with a logo to match