This lovely cardigan looks very lightweight and delicate, because of the fingering weight (1) yarn and the larger (5 mm) crochet hook which was used. The experience level for this pattern is intermediate. The pattern is available in 5 sizes.
You can find the free crochet pattern of the Daphne Cocoon Cardigan on the website of Sincerely Pam. To find the free version, you will have to scroll down for a while on her website.