I NEED YOUR HELP!!!!! Please help me!!!!

Can anyone help me with tips to convince my mama to let me get a german shorthaired pointer puppy?? Please!!! I want a puppy so bad!!! Its like my heart is a tooth and it has a cavity that can only be filled with a puppy!!!  I KNOW i will be a darn good owner! I've done all my research and calculations. Now i just NEED HELP to CONVINCE my MOM!! Thank you all!! :-)