Here’s an interesting use of an ultrasonic bath to recover paints that have separated.
painting
Matting Acrylics With Talc
The Waving Flag has an article on creating a matte effect in acrylics with talc.
Black Undercoat Painting Tutorial
My painting life hanged when I switched over from white to black undercoat. Here’s a tutorial on using black undercoats.
Tutorial On Fast Wash Painting In 15mm
Both the speed and quality of my painting have improved since I learned to use washes effectively. Here’s a nice tutorial on using washes in 15mm.