Have you been eyeing up those amazing sweaters made by Katwise for ages? If you crochet, you can make your own! This crochet pattern mimics the look of serged seams and has an option for a pixie hood. I love the pastel rainbow option, but the blues and browns look amazing too, like a forest fairy. (affiliate link)
How to Knit a Perfect Edge was a mystery -until I found this technique. This is absolutely essential for cardigans if you want to avoid knitting the bands and finishing the raw edges. And it's free. thank you, Alina!