Can these paints just be painted on or do you need an outliner to stop it running?
The Pebeo paints can be used in many ways. You can use the Cerne relief to create a barrier allowing a more controlled way of working. But the paint is equally fun when allowed to flow freely. The Fantasy Moon and Prism are able to be controlled as they have a quite thick constancy. You can move the paint up to the edge of a canvas or board and control whether it flows over the sides or not. Patterns can be created by moving the paint around and depending on how much paint is already on the surface the you can have some control. If the is a lot of paint, then it is fun to see the paint develop and continually move until it is dry. You can allow the paint to dry for 24 hours and then add new layers.