When I saw your qusteion, I imediately thought of two Norwegian signs wich are in many ways similar. (The NSL for waterfall is one-handed, and thus less complicated). Those two signs means 'expert' (right hand brushing atop left hand, both hands horisontal ond fingers spread) and 'maculation by shedding' (rigt hand brushing left hand, both hands vertcal/down and with fingers spread). No jigeling of fingers on those two. I have attached my attempts two write these signs. I find the Tusnisan sign much harder to write ...

Ingvild