A tutorial?... :/
No.
You'll learn more from watching a painting's playback. But dont just watch it, study it, ask yourself why artists do the things they do to get certain results, think about their style and then apply it to yourself.
A painting's playback is already pretty much a tutorial, after all, all of my artwork in my gallery originated from someone else's style. I didn't start out like this.
Also, nothings impossible, just remember that the next time you judge your work.
If I ever do make a tutorial it'll be about what I just told you. Because thats how I've learned.

i posted that drawing you asked for ^w^