Drawfag here. Trying to learn how to replicate the artstyle as close as possible but struggle with a few things. There are still a couple of things I don't get right, most notably the rougher looking lines. I was wondering if any other drawfags here could show how they do it?
I'm also using Paint Tool SAI and want to replicate the more recent styles, before anyone asks.

And Official Artstyle thread in general too, I guess. What's some of the best/worst examples of the style?
I'd say one of the worst ones is this art of scraggy, honestly. The shading looks like it's been done in 10 minutes