I was just looking at that tutorial, and I think you did a really good job explaining!

I also looked at the links in the polls at severalplums, and I'm excited at the prospect of challenges that include making the resources you use.

I do love non-destructive editing. Wish I had something as handy as Layers for fic, where I wind up with documents littered with commented-out deletions, and auxiliary files of extra material. With images, there it all is in one handy stack of layers! Until I starte combining different layers and stamping the results without noting which layers I combined ... aaaaaaa ...

Definitely save the brush results you like!