Wow! This is impressive. I started a scene from Super Mario Brothers 2 in crochet (about 4 years ago ) and still haven't finished it, so I know how much work this is. Any suggestions for keeping the yarns from tangling as you go?
Yes, I do have advice You can buy those yarn spool things (you'd need a million) or you can just DIY it like me. I took cardboard and cut it into H shapes with notches on the ends to secure the yarn. Just wrap your yarn around it and cut it. You may have to replace them along the way, but they're free and totally worth it.