First, cultural; I have little or no idea about the sociology of "lefties"
(left-handed people) in Asia; different countries (or even provinces?)
might have different points of view. (I do hope nobody minds that term
"leftie"; I have not known it to be an epithet. I mean it only as a
friendly and concise usage.)

Second, for instance, the usual way to start to draw a square box, iirc,
is to write the top stroke left to right, keep pen/brush in contact, then
make the down stroke. IIrc, that counts as one stroke -- a bent one.
However, it would seem that a mirror-image reversal would be easier for a
"leftie" to write.

More generally, this has implications for several details; is
right-to-left (RtL) char. seq. acceptable? (My guess: Only rarely) Of
course, top down doesn't matter as much.

As well, it seems that the radical is often on the left; trad'ly. written
first? (I've forgotten.)

It seems possible that an experienced eye could tell that CJK text was
written by a "leftie".

Not sure I want to start a thread about lefties writing Arabic (or Hebrew
or other RtL scripts, for that matter) (yet).
I'm aware that desert life has "special implications", culturally, for the
left hand.

(Btw, boustrophedon, anyone? :) )

Cheers,

--
Nicholas Bodley /*|*\ Waltham, Mass. (Not "MA")
The curious hermit -- autodidact and polymath
Hope for these times: Paul Rogat Loeb's book --
"The Impossible Will Take a Little While:..."