Nice work big yim. I had a 3/4 sleeve finished recently which involved a couple of 7hr sessions, most of it was dot work so not too bad but kudos for sitting for 6hrs for your first time.
As for care, I left mine wrapped for a couple of hours, washed it, patted dry and applied cocoa butter twice a day until the scabs had fallen off. This is what the tattooist recommended and it’s worked out perfectly, plus it smells amazing. Good luck with your next session.