@Sallyanne That is possible although you need to concentrate on fitting the lower part of the ellipse as well as the overall size to include all of the layer mask.
Quote:
I made a layer mask, so that I could paint out the lower part of the tower.
what I found was the the lip of the cup, which is a perfect ellipse, is very hard to paint. It looks bad.
If you concentrate on the curve of the rim, then use the various selection modes for a layer mask Layer -> Mask -> (various selection modes). Using intersection mode gets a partial selection. Invert it and just paint it out. I can just get it into 60 seconds
https://i.imgur.com/Lf9DC6g.mp4I would be inclined not to use an elliptical, a path and path to selection might be easier than rotating / sizing that ellipse..