The training course for the qualification examination of graffiti teachers is quite good. I took part in the exam last year, but failed several times, so I had to sign up for the training class and chose to paint. The teacher is very humorous. If I don't understand, I will explain it to us again and again. I like it very much, and finally I got the certificate easily, and all our classes passed. I suggest you have a look. There can be no mistake ~ ~