Make sure to write down what brands and colors you use on your models. Use a database, a spreadsheet, text document, scrapbook, whatever works for you.

List the year you bought the paint, Brand, color, stock number, and what you used it for (Primer, Base, Lowlight, Highlight, Shade, Wash), and where you used it (Cloak, Armor, Belts, Buckles, Hair). Then track what models used what recipes so you can return to them and add any nots you think will help.

This allows you to come back to a color scheme or theme next year when reinforcements arrive and keep your army looking cohesive. It also makes it easier when you bring a new player into the game and they ask how you did the amazing hair on your elves.

Its a lot of work but you will thank yourself in the future.

Also things like airbrush psi and mix, for those that prime, zenith and matte with airbrush.

great suggestion! Especially for new painters who are experimenting to get the look they want.