A proper tennis serve stance is when your feet are positioned so that the front foot is pointing towards the right net post (for right-handers) and the back foot is parallel to the baseline.
A tennis serve is a weapon only when the technique is correct. When the serve technique is not correct, then the serve is often more a liability than an asset. In order to learn correct tennis serve technique, simple serving tips won’t get you there.
Instead you need to follow step-by-step progressions that build the service motion from the ground up. The following technical progressions of building a proper tennis serve can be used to correct your existing serve techniques if you find your serve ineffective. These step by step serve lessons can also be used if you’re a total beginner and want to learn correct serving technique from scratch.