Not bad work on the lighting and darkening, normally with this style you darken the whole tag abit except the lighting and dodge the lighting to bring it out more. also work on your circles they look too plain and boring get some fracts and bubbles on there. Also best thing to do to get used to this style is either ask Erick (Liquid) to have a couple of his psd's He did this with me so i could get a grip of it. Or you could have a look in the PSD section or @ my dA as i have a couple of psd's on this style.
But i see alot of improvement in you mate gj