Acrylics and painting - a new obsession?

I joined a class for free painting and on our first evening we did some interesting things with lots of water and paint and even more water. The pieces I did that evening are still in the class room cause they were still wet when we went home and I forgot to take my camera. But for a few days now I am working on this piece at home. It is acrylic paint on paper and lots of water here and there and everywhere. It takes very long to dry cause the paint is really thick in some areas. So I can only add a few more "running lines" every day. I like the way it changes slowly and I like adding and adding. Will stick to yellow, red and blue and see how it looks in a few more days. Maybe in the end I might add some black.