> Drawing and writing from your elbow makes all the difference and suddenly you can keep going forever. And your lines look cleaner.

Does this truly work?

I remember stumbling on a page that advocated using shoulder and elbow movements to control drawing utensils, for the reasons you describe. I recall it looking pretty sketchy, "one weird trick" type, but I figured what the hell, it's cheap to try and my handwriting sucks. So I tried and tried, for many hours (EDIT: [0]), and observed that it's not only much more tiring than "normal" way of drawing/writing, it's also extremely imprecise. Sure, I can sort of draw a straighter line this way, but I can't control where it goes or stops with enough precision. And everything has to be bigger, because again, precision for normal-scale letter writing just isn't there.

Or maybe my body is just broken?

(Also tried this with a mouse, with the same results - everything takes too long, and keeping the arm unsupported is tiring.)

--

[0] - I dug out my old notes; it was exactly 8.5 hours of focused, deliberate practice of drawing letters using arm and forearm for control, over the span of a month, on top of any writing activity I'd otherwise be doing. I may also have spent additional 1.5 hours on the aforementioned practice, but the notes aren't sure if that really happened (I tracked it in two systems, there was an entry missing in one).