now that I got those zings I can go constructive: it is no where near copper or metal in general. Look at metal balls, they have very sharp highlights and very deep shadows and sharp contrasts. Try to block in the areas you see on a metal ball, watch for the negative space, where the refraction and reflection originate from and then try to replicate it. Do it in greyscale first, as its really hard to try and learn metal with color at first.
try drawing these, practise materials and stuff from life or photos not pull it out of your ass. You can't draw from head what you don't have in it.
ctrlpaint might have some tutorials on that subject as well.