u/Primary_Telephone301

https://preview.redd.it/pcodo27mnibh1.png?width=1172&format=png&auto=webp&s=06ff99350cb8fb76bb67464b1e23ee8ea4432479

I really cannot imagine how disappointed he is

This is my first post in Reddit. I live in Vietnam. I want to improve my backhand and topspin, I'm currently using a Sanwei beginner paddle. How can i practice efficiently?