Hey Emil, I think you’ve made a good start here with the serves! I think for now a there’s a couple of things that will help. Really trying to accelerate through the contact point on the ball and keeping the wrist more relaxed and loose will really help the spin you can generate. To do this relaxing you’re grip overall will help.
The motion of the serve looks good, I think the acceleration and the wrist that I said are the main things to focus on for now. One last thing that will help for now is trying to bend the wrist downwards a bit more, so itlf you imagine your normal playing grip but then the top of the bat drops down and points more towards the fl, this helps come around the side of the ball and get spin and hide the spin.
Dan 🙂Â