Personalized Whatif Monster I'm Sweeter Than I Seem Long Sleeve T-Shirt. He may be anxious, and a little bit pessimistic, but he sure is sweet! Whatif Monster I'm Sweeter Than I Seem Long Sleeve T-Shirt - Kelly Green, from the children's book "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL