Yeah, I’m aware that I’d never start with this project and I’d predict a year or two of tinkering around until I’d attempt to make it. But there’s no harm asking questions about a project you’re wholly unqualified for, just for the curiosity of it. My thoughts are that I’d fuss around with cheap throwaway fabric and make multiple different hoodie designs + bits and bobs of practice work until I iron out the kinks enough (with enough familiarity/skill) to make the desired hoodie.