Thank you <3 I got here through years and years of practice. I was drawing as soon as I could pick up a pencil. I firmly believe nearly anybody can learn to draw if they want to. I say nearly because there are people out there with physical and/or mental disabilities [god I hate that word] who simply cannot... but if you are sound of mind and of body and are willing to put up with imperfect attempts, time after time [I don't get it right all the time!] you'll get there.
My style has finally settled, I think. My wolves haven't changed much since 2009. My horses have, because I've been working on more realism with them, but all the same, there are some things about them that haven't and probably won't change.
I think the most important thing for any artist [especially if they're going to draw without a reference!] is to study the anatomy of whatever it is they want to draw. The anatomy, and the proportions. Where the bones lie [I draw a very basic skeleton as my basic beginning sketch], then the muscle and sinew, then at last the skin and fine details go on top. It really helps to be digital because you can draw each anatomy feature on its own layer in a different colour [cyan for bones, red for muscle, purple for skin and green for details, for example] and then line - or don't line, depends on if you want them or not - on top in black, and finally keep your under-sketching [layers above the shading/base colour so you can see them!] for the shading stage... but delete it when you're done.
I have a tendency to like to line even if I'm going for line-free, like Lumin, just because I don't like to skip that step... I'm very routine-oriented :P