You can metaphorically take a page out of a coloring book, and break up the work into a few sections. Each team member or group within the team should first be instructed on which part of the page they are going to color, let them know what color they can use, and when their turn will come up. Next, after each team member has finished their part of the coloring than take the completed picture and hangs it up so that every one can see their part of the picture and the entire teams contribution.
Coloring in a Coloring Book. You can buy a coloring book in any grocery store just look in the childrens department. Some coloring books incorporate puzzles and other activities. Buy a box of crayons with lots of colors as you can really express yourself. The stress reducing part of this plan is that you choose a picture or activity that feels good to you, something you can focus your mind on. This focusing will redirect your thoughts to less stressed thoughts. The colors you choose do not have to be appropriate to the theme of the picture if you so desire. The idea here is to feel creative, to slow down and release your feelings in your coloring activity.
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.