We've told you what to avoid, but maybe it would help to show you what a great breeder and their contract looks like.
This person is one of my favorite breeders here on YT. Her dogs are beautiful and most importantly, she stands behind the health of them. IMO, she goes above and beyond.
Yorkie Health Guarantee Amazing Yorkies - AKC Yorkie Show Breeder - Show Prospects or Quality Pets
ETA: I'm not ignoring the other great breeders on here (you know who you are). I just think that Deb's contract is one of the most straightforward and easiest for new owners to try and understand what we are telling people to look for.