Polina Oshu ✨ Pattern Designer ✏️ Mentor for Creatives on Instagram: "4 Tips for using Posca markers ☑️ 1. Shake well before use. Posca markers contain a tiny ball inside the barrel to mix the paint. 2. Experiment on a test surface. Test them out on a piece of paper or a similar surface before drawing on your final project. 3. Let the first layer dry. Posca markers are opaque so that you can layer colors on each other. Let the first layer dry completely before adding another layer to…