The lines of your coloring page are the rules you need to share with your team, share with them the boundaries. They are more likely to stay with in the lines if they know that they exist. Next by holding the work up for group and team acceptance they become their own self policing force. They can set self expectations and make constructive self criticism as well. The reward is acceptance and recognition from the team, an old saying is that a person can starve without any feedback, but only needs one good compliment to be filled to overflowing.
On TheDollPalace.com, for example, dolls of every shape and size are available for children to play with and create, and then favorites are created into coloring pages. When dolls and coloring pages are complete, there are still interesting articles to read, personalities about the dolls to create, contests to take part in, and even forums and chats to visit to get to know other doll and coloring enthusiasts.