
First your dog would need its breed recommend health testing ( its not the same as a vet health check) for your breed this would be
Eye testing (with a specialist eye vet)
DNA test for prcd-PRA
DNA test for FN
Hip scoring
Gonioscopy
If you dog passes all of those with good results then look thurther into breeding. At that point you will need to know your dogs faults and there lines.
If you have a male you will need to prove to bitch owner he is worth them using him at stud. Your breed is a very common breed so bitch owners are spoilt for choice when it comes to good quality studs. You would need to prove his worth threw working, showing, compeating with him. As a good breeder won't want to use just any dog and as a stud owner it will be your job to make sure onky responsible breeders use him.
If you own a bitch you will need to find a good stud who complements your girl, you will find the males at shows, field triles ect. Showing/working your girl will help teach you where her faults lie and will show a stud owner that she is breeding quality as a good responsible stud owner won't just let any old bitch use their stud.
Also showing and/or working you dogs will get your name out there with in the breed. As your breed is common they are over bred with loads of pets being irresponsibly bred for the wrong reasons. This will mean finding your puplies good homes will likely be harder if you are not known in your breed for having quality dogs.
Before you actually get to the act of maiting a dog you will need to know the process, what can go wrong, how to spot if it has gone wrong and what to do if it does. This is a lot of Info and there are a few good books on this. I'd recommend getting the book of the bitch and read it cover to cover.