Hm...I wouldn't call myself a professional, but I could suggest something.
Try creating a linear gradient, running frosted glass on it with a large radius, and then oil painting at max settings and relief. That should give you some ideas.
Bright colors are not the way to go when designing a website...especially multiple bright colors. Yellow in particular makes me go "ow my eyes!" Anyway, that's my two cents...perhaps add some shading to make the buttons stand out a little as well...? Good luck! 8)
No but looking at that old sig made me want to make a new one haha
I tried to do one like yours when I first started out over a year ago...didn't turn out nearly as well...perhaps I should try again...