“Love Heidi's classes, she gives you the choice of getting the class along with the offical zentangle stuff as shown below or just the class if you already have it, love using the offical stuff & there is so much to choose from, if you want to go further. But you can also do just the class & use any pen or paper if your just giving it a go for the first time & unsure if it's for you. It looks hard but it's so easy when done in steps with Heidi as your teacher.”