The very first thing you have to do is to study the compartments of your cosmetic case. This will provide you with better organization. Some storage boxes such as cosmetic train cases have sections for storing brushes, liquid foundations, pencils and pressed powders. This is a must-have for professional makeup artists. Start with the smallest items such as eyeliners and lip liners. Use the compartment designated for their storage. When storing liquid and powder cosmetics, make sure each cap is on tightly to avoid spilling. Put these items in separate compartments or place them in sealed plastic bags if you do not use them that often.