When I need to learn or refresh my mind on how a program works, I play. Here I am playing in Corel Photopaint.
126/365 This is a preset effect called 'zigzag', set at normal.
127/365 I made this into a duotone, returned the colour to it (RGB) , on one colour plane and then turned it back into a .jpg. Not sure I could get the same effects again. She is a flaming red-head, though.
128/365 Playing with the light values in gray scale and then scrubbing the background.
Okay, playtime is over. Must read minutes and meeting notes now. Snivel!