I think that this post by Tophius is really helpful. It got me pointed in the right direction.
Must keep that in mind, thanks! ^^
I usually just look off of reference pictures whenever I want to draw something, or just pose myself how I want when I need to to get the basic idea.
Really, I've just taught myself how to draw, with a few art classes here and there.
I refrain from drawing realistic looking people. It's just not my style of drawing and they always come out stuff.
I'm far far better at drawing scenes (places, basically) and anything mechanical. Mechanical to me isn't a strict sense of "hard edges and boring surfaces", as some may consider it. For example I recently finished a sketch of a fighter jet concept I came up with. It's a mixture of smooth curves and surfaces and hard edges.
I guess what I'm trying to say here is, not everyone can draw in every style. It may be a good idea to find your own style and work with that.
Pretty much this.
I've found from my experience that I'm decent at drawing semi-realistic people, but not super realistic. I'll put in common details, like eyebrows, a few clothing curves, collar bones, but nothing super detailed like highly detailed hair and such.