Hello everyone, I could use some help with my first serve. I have a very good second serve, but my first serve is really to slow. I have been taped by a friend and I see when I do my first serve (flat), my racket "doesn't" drop behind my back. It feels unnatural at this point to generate power hitting a flat serve by using the racket drop. It seems when I try, the power I generate is significantly less and makes it more difficult to execute the pronation well. Any tips how I can improve this racket drop?