In the YouTube video “The 10 Biggest PADEL TECHNIQUE Mistakes!”, the presenter discusses common mistakes padel players make before even hitting the ball, with a focus on technique. Mistakes include applying too much grip pressure, not using the left hand correctly, preparing too low or too high, and using the wrong grip for different strokes. To improve technique, players should maintain a relaxed grip, keep the left hand up, prepare at the correct height for each shot, and use the appropriate grip for each stroke. The presenter emphasizes the importance of proper preparation and hand positioning, as well as varying techniques for different shots. Mistakes such as using only a slice technique or having a late or fast preparation can negatively impact performance. Overall, the speaker encourages viewers to focus on improving their technique to enhance their padel game.