How do I edit my ‘Amazon Handmade’ profile?

On returning here after a long while I find everything is changed up and I can’t figure out how to edit ‘about me’ information (Handmade). I’ve tried every menu (as best I can tell) but can’t find it anywhere. Yet it’s still showing when I click on one of my for sale items, on the right hand side. I could close the account as sales are few and far between but that’s a last resort. Any help gratefully received.