Hello I am fairly new to crocheting but I am looking for a jacket pattern for girls size 2 & 4 yrs old

I would like to make my granddaughters who wear a 2T and a 4T, a jacket with or without a hood . I would like
to find a pattern that is done in single crochet so it will be warmer at night when they are camping . I have selected Red Heart Comfort yarn which is a # 4 worsted. I there is aneone that can help me out with a pattern i would be very grateful.As I am fairly new to Crocheting something simple would be best.