Yes, I think I have got the hilly results I wanted. The best success that I had was with using a soft airbrush in the Paint tab (after havng clicked the Reset button).

More about dogs  --- My (retired) parents (who live in Tasmania) have had collies until very recently. They had two, but one (old) dog passed away just after Christmas, and I think the other dog was very heartbroken because she passed away soon after.  Very sad, but I was speaking to my mother this morning they are hoping to get a 3 year old corgi bitch in the near future, which I was very excited to hear. My mother loves corgis, just like the Queen !!