If you're not satisfied with your pics then take a good look at them, see what you have done wrong, then throw them away and start new. Or you can keep them so in future you can compare. Whichever you prefer. I personally destroy them as soon as I see one small thing that is not quite the way I wanted it.
It's a good try, I can tell from the pic that you have a passion for drawing. But don't become someone that posts pics every day or draws to quick, this will only destroy your perception. Take your time and analyse your own pics before posting.
