To use this knitting pattern, first choose the right size for your child according to the chest circumference measurement. Then pick the recommended Lolabean Yarn Co. Pinto Bean DK yarn in the colors Forgiveness, Bean & Olive, and El Bosque. Start knitting following the pattern step - by - step. When you're done with the sweater, make sure to sew up any loose ends neatly. For maintenance, hand - wash the sweater in cold water to keep the colors vibrant and the shape intact. Lay it flat to dry to avoid stretching. Don't iron it directly on the hearts to prevent damage to the yarn.