Hey! I think we all just sort of learn from doing it over and over. Practice makes perfect. But if I had to recommend anything that would help make sure you're using good brushes and if you need use the daily cleaner by Sephora with a rag in between colors. Also I use 2-3 different brushes when I'm goin to be using 3-5 different shadows. Sometimes certain brushes don't work as well with certain shadows. Hope that helps and Good Luck!