Well I like the engraved effect you did with the text, yet the font is a bad choice. Also, try giving the green circles some kind of an inner shadow, to make it look like the backround is passed the metal interface. Right now it's a little flat. Make it look like you need to travel through the holes a little to get to the backround. Also, maybe a little more shine to the interface. I'm liking it though. The colors work pretty well.
