This is going to come off as smart-aleck, but it really isn't. My advice is that if you need to seek advice, you should hold off on breeding. Breeding should be a natural step taken when you've got some good dogs that you've really built something out of. (By good, I don't mean a good pet. I mean a dog that's really exemplary for its breed, backed up by titles and passing health scores.) You should be fully confident of what you are doing, including taking care of any hang-ups on your own. If there is any question, you aren't ready. You may never be ready, and there's absolutely nothing wrong with that. Breeding done wrong is heartbreaking.