Today breeding has been changed as there are too many option that produce various type and traits within the same breed. This has come because of breeders personal dislikes and likes of certain colors, sizes and types but remember every purebred breeder needs certain breed standards. Does your dog has that true breed features? Does it look like what it breed books say like? Does it compare to images of dogs of its breed of famous or old bred? Lastly does it have the correct temperature for breeding and doest it sound healthy?
There are many question one should consider asking themselves before undertaking breeding. If you are ready to answer any questions above then do some basic research on how to breed them. The next thing should be what are you trying to keep in dog breeding and what are you trying to increase and improve.
The three main breeding methods are line breeding, inbreeding and out crossing. You can also buy books on dog breeding if you are not an expert. Let me discuss what i know about the three breeding techniques.
Cross breeding - This breeding is very familiar and done none related dogs who are in same line in your dogs pedigree. This type of breeding will not give quality puppies and breeding this way may lead to uncertain factors.
Line breeding - This type of breeding is done down from certain breeding line. You can get dog breeds of same quality, size and type with this method.
Inbreeding - This is similar to line breeding. For instance little sister or brother or mother to son etc. You can expect high quality puppies in this type of breeding.