Aye maybe tone down the normal a tad more, for spec don't be afraid to experiment also with texture over lays and color! :D you could push the highlights in your spec also and diffuse. Good start though keep pushing it!
a couple things I see. I think you could benefit a bit from darkening the diffuse of your wood and using a spec with some contrast to break up the surface a bit. right now it is reading a bit flat with your spec. Also the amount of rippling in your normal map is making the wood seem almost like it is a thin wood veneer on…