Mobile Application UI Design

So, I’m working on creating a test editor for my mobile (Nokia 5800). Anyway, I’ve always been more toward the developing side of the spectrum, so I thought I’d ask your opinions on how to make it look better.

Here it is:

Color palette from colourlovers
Font used is Quicksand Bold

The first is what it should look like normally, the second is with the slide up menu open. I’m not sure I really like the menu, but I can’t quite put my finger on what to do to make it look better. Also, the text is left aligned and the field is centered, but it looks off center to the left because of alignment. Should I compensate for that to make it look more balanced? Are the colors good? Anything else you can see that looks extra good/bad?

Thanks for reading,