Bat infection : Strictly One Layer Painting

Bat infection: Strictly One Layer Painting
Strictly One Layer Painting Series
Just random exploration of this new habit of mine called "Strictly one layer painting"
Rules for me:
No "new layer" during process.
During the process file should be saved/Worked as jpeg not psd, means No "Adjustment layers"
Single brush if possible.
Less undo
Exactly like traditional painting. except adjustments are allowed as long as they are not in a layer that can be edited later.
Painted everything in photoshop. Time takes less than 2 days.