I haven't committed to drawing for a very long time. Instead I pursued other arts like painting on paper or models, and writing a little.
Because of the painting, I needed sketches. The better I got in painting (you might see that soon), the better I needed my sketches to be, while they needed to be just sketches, no big pictures.
What happened there and then is that I began to randomly sketch. First off heads, because I got worst with them. Then random stuff, too, like murlocks and barghests, for practice.

To my utter surprise, within five filled sheets of paper and about two weeks of time, I reached this skill level of sketching!
I hope you enjoy it as much as I do. :)