Palate knife , about 6-8 inches long with a firm spring action is perfect. The knife has many uses. The primary action is mixing the powders and binders. 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.