Use a firm circular motion, in the roughened area of the glass palate. Grind the powder with the binder and mixing agent until very smooth. Brushes are extremely important. Invest in the best and you will have good results. Trenton tracers needed for tracing lines and decorative enhancements.
Pointed tracer is the most versatile.
The holder used for the brush head can also double as a scraper. Blenders for matting come in two sizes and two prices, both expensive. The only blending brush to consider is a badger-hair. Applications brush, used to put the mat paint on the project, is a made of camel hair. Ox-hair is another option.