Yep, another one
After some exhaustive research... okay, I looked in two places... it would seem that not only is using a forefinger on touch-pad not the best option, but that I should be using photoshop, which I don't have. So the chances of me producing anything close to what I want are relatively zero.
You've gotta love odds like that.
I blame the above on Miss Marple. If I hadn't seen that particular mystery four times already, I wouldn't have sat doodling this while I watched.