I really like where this is going. But overall, your Uv's need to be cleaner/tighter. For one, I would suggest working with a neutral background color to your texture. Having pink metal/paint, on a gray background is no good, when it comes to the texture mipping (down sizing due to draw distance/resolution settings)What Jackablade said, is totally on the money. Take his advice into serious consieration, because it will help make this asset better.
Also, look at the bottom of your cone. See how you are painting on an angle? With the limited texture resolution you have, don't paint on angles if you can. Straighten out your uv's and give your self the ability to paint highlights and lowlights on a straight line, rather than an angle.
If you want me to explain further I will
Looking great in any case, this will help push it over the top.