It goes without saying that if you are going to breed and do it in a manner that is safe and in the best interest of your girl, then you need to really study up on ALL of the many details invovled--breed standard and how your female (and the male) match up to both the standard and how they will compliment each other, genetic and health testing, the actual breeding of the two, the actual whelp, raising and socializing a litter, etc etc. The list goes on and on. IMO, the most important tool in preparing yourself to become a breeder is finding an experienced, reputable mentor to work with who will guide you along the way and help you gain valuable on hands experience.
This type of preparation is crucial and is what will help ensure you that you are as prepared as possible to handle any speedbumps along the way, which could ultimately mean life or death for your girl and any resulting pups.
This type of preparation is something that you need to learn
before you ever put the male and female together. And it does not come overnight and is not something you can 'pick up on' or 'learn' as you go along--it takes months, even years. My concern with your girl would be that by the time you can properly prepare, she may be too old to whelp her first litter safely. (Maybe, maybe not.)
My suggestion would be to find a mentor to work with, get some experience while under a watchful, trained eye and see then if you think breeding is for you and something that would interest you. If you decide it is, then at that point consider aquiring a female to breed. I think it is certainly safe to say that no harm ever came from being properly prepared rather than giving it a go and finding yourself in over your head.
Good luck in your future endevours!