Before you find a stud, you need to get your dog tested to be sure that she is clear of the serious genetic diseases. (They can carry without being sick.)
Then you need to decide how you will be there for your customer...this is much like establishing a business plan. When you help to produce these beautiful babies, you gain an obligation to them for their lifetime...so the new owners need to be able to rely on you for help and advice, and for a good health warranty. Be prepared to refund the full purchase price, if necessary.
Also, it is very expensive...you will pay a lot in vet bills and probably won't make any money at all, for a couple of years at best.
There is much more to do too, and I'll be happy to help you if you want to find out more.
When looking for a stud, you want to look for a good temerament, and make sure that the stud has also been tested and has good scores. You will want to check his pedigree to be sure that your female and the stud are not related.
I know that this is a bit discouraging, but I wish that I would have been told all of these things before I decided to breed...it has been a struggle.
Oh...and make sure that you have your breeder's approval to breed your female. Usually a puppy is sold with a spay/neuter contract and you need to get that changed if you have one.
And...be prepared for the death and sorrow that comes with this. You will get very, very attached to your puppies...it is so hard to let them go to new homes, but extremely painful when one dies.
There are good web sites out there that help you weigh whether or not you should breed. I suggest that you do a lot of research and find out what you need to do before you get your female pregnant.
I didn't answer your question...sorry...if you have all of the testing done, we can help you find a stud dog...we know of various breeders with stud dogs...and many of us on this forum have them too. But no reputable stud owner will allow their dog to mate with an untested female...so that is your starting point. :wink: