Well the serve is the most important shot in the game but how can you develop it into the weapon you need it to become?
If the forehand and backhands are basically just swings of the racket and the volley is a punch/block then what type of action is the serve?
If you can identify thie then getting it better should be easy?
The action itself is a throwing type action so developing your ability to throw will greatly enhance your actual throw - SIMPLE.
Below is a great practise for you and before you think "it's a bit easy" - I can tell you it's a simple but very effective thing that all the Top Players use.
To activate the player and play the clip you need to click the play button in the bottom left hand corner - maybe twice
Once you have done the throwing drill it will transfer the relevant skills over to your serve and it will begin to look like the service action below.
To activate the player and play the clip you need to click the play button in the bottom left hand corner - maybe twice