Improveyourvolley.com has some tips on when and how to serve. One thought is that even though your hand is what makes contact with the ball these are factors you should also be aware of to have a solid over hand serve:
Welcome to “2019 Camper Moments”! Even though our summer camp has ended, we will continue to feature campers from a variety of camps at Purchase on Wednesdays. Please contact us with any requests to know more about Future Stars Camps at: firstname.lastname@example.org
Synopsis: Volleyball is quickly gaining in popularity with girls across the country, and thanks to the combination of excitement and discipline that it offers, it could continue to grow for years to come.