You asked how I got the toast effect on my bread. Basically, using PSP 2020 I made a selection of the bread using the Magic Wand from the Toolbar. Seeing that this only selected the center of the bread, I expanded the selection by using Selection / Modify / Expand and added 10 pixels so that the whole of the bread was selected. I then added a new layer above the bread and chose the Airbrush from the Toolbar and set this to about maximum size. Choosing a mid brown colour, I tapped within the selection. I then changed to a darker colour and tapped again. I liked that effect.
I’ve been a digital artist for about six years using Corel Painter so I knew about layers and airbrushes.