I'm experimenting with flow in Photoshop, but can't seem to get it to work.
So I've selected a basic brush and set opacity to 100% and flow to 20%.
But even when I keep painting over the same bit, I just end up with a load of flat colour, instead of giving the effect that it's supposed to:
See the image below, I am trying to get an effect similar to that on the left... but instead I get what is shown on the right:
Am I doing something wrong or could it perhaps be a bug? I'm using Ps 19.1.0 if that helps