Most police departments have a rule against breeding the K9's....
As others have said, to be a responsible breeder, you need to learn more about the breed, the pedigrees, the different types of GSDs....what works being bred together and what doesn't.....you also need to understand the risks to your female, and the costs in possible veterinary care prior and during the pregnancy, and the whelping process....these costs can run into thousands of dollars for the owner of the female. Are you financially prepared to do an emergency surgery on teh female if something goes wrong? Are you prepared to hand raise 6 or 10 puppies who need round the clock care if your female dies?
This site has tons of threads with good information that will help you understand the risks of breeding, the goals of breeding, and how to be a responsible breeder. You have a young female, so plenty of time to learn before you do any breeding......around here "Back yard breeder" is a very derogatory term....the opposite of a responsible breeder, so I think you need to understand what is involved with breeding before making any decisions to have a litter.
There are alot of nice people here who will try to help you understand why it is not good to be a BYB - and how to help you become a responsible breeder - jumping into it by breeding a young female wtihout credentials for a few hundred dollars is not going to be perceived as a good thing.
Hexe Sch2, Komet & Kougar IPO1, Kira HGH, SG Bengal, Lynx v Wolfstraum ~ Ziberia IPO1 ~ ATB Basha, Kougar & Kyra, Fenja, Sch3s, Cito, Sch2, DangerRH, Csabre & Alice Sch1s ~Kelsey