Art-things going "click" in my head

Sometimes, it takes some additional input to understand advice.

One thing is the "draw lines with one long stroke, not by adding up lots of smaller lines" one. I never understood how that would be possible, until I came across advice on how to improve your handwriting saying you should use your shoulder and back muscles, not your wrist and fingers for writing. Doesn't mean I can magically DO it, but at least I have some idea of what I might try to learn.

Another are the scribble pictures. I remember doing those in art class back at school. Here's the idea:
You scribble random loops and lines on a piece of paper
Then you look at it, and turn it into an image of whatever you happen to see in it.

I thought the idea was drawing over the lines as they were on the paper, so mostly I ended up with blobby rubbish, like snakes without heads, three-story mushrooms, or faces like this one:

Then I came across a tutorial at deviantart, which is not safe for work due to nudity, and looking at the example... You could add stuff. You could turn a circle into a face, or a hand. Yeah, I see how that might actually be fun, rather than frustrating, and result in more interesting images.

[caption id="attachment_392" align="aligncenter" width="500" caption="Here's the original scribble; lines darkened digitally to make sure they show up; actually I use very light pencil lines. I also turned the sheet around a bit until I spotted something..."][/caption]

[caption id="attachment_394" align="aligncenter" width="500" caption="I saw a head and a wing, and went from that..."][/caption]

[caption id="attachment_395" align="aligncenter" width="500" caption="Added feet and tail and refined some details. Would look better if I traced it on a clean sheet in ink, but I'll leave it as the little warmup practise it is."][/caption]