OK, so I am having a go at Lesson 5 from a single to multiple masks and having a problem. The first time I tried it, the top mask layer was ok, but the bottom mask didn't show up. I have tried this now about 4 times, and in each case the black fill is just not happening. After I inverted the selection on the mask, chose black, and the fill tool it looks as though nothing is being filled. I have closed PSP2020 and opened it up again in case there was a glitch, but I am still not getting the desired effect. I have also tried this technique on one of the other templates for masks in this workshop, but still have the same outcome. Can you help please.