"No instructions were included. I took the cap off and tried to use the pen and nothing happened, so I squeezed harder, and harder. Then the inside tip popped off, but still no paint, so I squeezed harder and then, paint came shooting out and got me in the face, and all over my outfit. If instructions were included, I could have avoided a mess, and I wouldn't have wasted paint. Since I read the other reviews, I believe you should remove the inside plastic piece, but on some the piece won't come out, unless you squeeze really hard and spray paint everywhere.
Good luck!"