Use POSCA PC-5M on terracotta and fix the color by curing the bowl or similar in an oven, 220°C for 45 minutes. Apply clear coat for extra protection.
Use Posca on porcelain and fix the color by curing the bowl or similar in an oven, 160°C for 45 minutes. Apply clear coat for extra protection.
Use Posca on glass and fix the color by curing the bowl or similar in an oven, 160°C for 45 minutes. Apply clear coat for extra protection.
Use Posca on textile and fix the color by ironing the back / opposite side.
Other materials, such as wood, metal and the like, usually just need clear lacquer. Always test on a small, less visible area first to ensure you are happy with the results.
Shake the POSCA pen well, always do this before use.
Pump out the color by pressing the nib against the surface (do on a seperate paper, so you can se that the paint is properly mixed och has good coverage).