Really diggin the style in which you work, you have a good understanding of what makes an image "look right." Your knowledge of painting is good I think, but if you really wanted to, you have all that's there to take that knowledge to another/the next level. Have you ever worked in oils? If you continue to work in digital means, working in oil every now and then REALLY helps, ie, developing an eye for color (which you have, but should nurture), and working in layers, as well as painting with the end in mind. Good work too on the corrections of your anatomy mistakes, albeit small ones. Its been a while since you last posted here, but I had to post something on this thread. Go baby go.
There will come a time when you think everything is finished. That will be the beginning.