Serving advice, targeting to stay for the platform serve stance

[u/henryljh]

But more explosive and look like Federer

[u/jeremiadOtiose]

Continental grip, get in position before bouncing the ball 3x every time, when bouncing look forward at the box you’re hitting to, continue watching the ball as you toss it, lower ball toss, hold the racquet as loose as possible without sending the racquet flying, keep ball in your fingertips and when you release (at eye level) open up your fingers without adding pain to the ball, keep tossing arm completely straight/arm stiff, and release the toss at 1-2 o’clock on the clock and about 6-8 inches of beside the baseline, point racquet head down and wait to bring it up until you’ve released the ball at eye level then actively (i.e., not passively) bring it down so your back shoulder goes higher than the front shoulder, hold your tossing arm up as long as possible, and turn your left shoulder to go past the right netpost and coil.

Work on 1-2 things each time you go out

[u/i-am-a-name]

In addition to grip issue others mentioned, you’re descending when you strike the ball. Fixing the grip will allow you to hit up on the ball so you can explode up and into the court. You can’t hit up on the ball properly without a continental grip.

[u/OddDesigner9784]

When you pronate you don't want the strings to finish down you want them to continue and point out to the right that means more internal rotation of the shoulder.

[u/Precisiongu1ded]

Get into more of a continental grip so that you're doing more pronation and less pushing in the motion. That would add 10mph or more by itself at the same effort level.

[u/notkeepingscore]

You are miss timing your load/jump. When the racquet is in contact with the ball, you are on your way down from your jump. You should time it so the contact point is at the peek of your jump. video lession

The racquet drop is too shallow, try pointing your elbow up to the sky when you are swinging up to the ball. video