Pick a shape, any shape. Next glue the entire shape with a good amount of elmers liquid glue. Then, fill in the shape with yarn, any color, and in any direction. Make it 2D by adding another layer over top once your first layer dries. Like is done with the fin on the fish. This was the only color of yarn at the time, but we since went and bought more so we could make many more colorful creations with this fun craft idea!