has potential. what i would do:
1) give the buttons some more depth. maybe an outer glow/bevel/drop shadow.
2) the screws need to be a bit more realistic.
heres somethin i did thats kinda similar. seeing as i created it myself, i like the screws.
3) not sure what the thing in the middle is.
i like the buttons tho, if you can keep the theme goin and finish it all, then go for it