How can I complete whole courses?
Hi, I just finished the color course then I can't keep moving! Do I need to buy other courses or how can I access in others? Thanks!
No, you just need to complete all the lessons in a skill before the next skill is unlocked. It continues like this untill you have completed your entire tree.
Not 100%, you can loose three hearts and still pass, but if you loose a fourth heart the you need to redo the lesson.