Our Color Your Own “When Should I Pray.” Posters are an excellent way to reinforce your lessons on prayer. Great for Sunday School and VBS these paper posters are a fun and creative learning experience for kids. When Should I Pray. Posters are cute and colorful addition to your child's religious room décor and a perfect way to remind children that prayer is an essential aspect of everyday life. (30 pcs per unit) 17 x 22