Hi Shaharyar,
Please click here to review my analysis of your serve. The lessons and drills recommended to review are:
https://www.youtube.com/watch?v=uYguiaDTgH8
https://members.tennisevolution.com/topics/stance-parallel-feet/
https://members.tennisevolution.com/topics/toss-x-marks-the-spot/
https://members.tennisevolution.com/topics/aim-safe-short-targets/
https://members.tennisevolution.com/topics/nose-on-the-fence-drill/
https://members.tennisevolution.com/topics/pop-the-ball-up-drill
I look forward to working with you,
Herman Krackow,
Head Coach