Watch YouTube videos of one handed backhands from professionals and pay close attention to their feet, their extension (seems to be your main issue as far as power goes), and how much they use their cores.
Sure! You seem to abbreviate your ground stoke swings. You are brushing the back of the ball to keep it in the court. Now you need to add hitting through the ball, really win the moment of contact, in order to improve your strokes. Use your core to load up and let the racquet move through the ball and out beyond the contact point while brushing the back. You are finishing your swings on purpose, whereas an advanced level tennis player's strokes finish as a result of their release. Watch video of a pro's forehand and backhand that you admire, and watch how far their racquet travels in front of them before finishing. You sometimes do this on your backhand really well in the video. Just remember to load up on your legs (even bend the knees some more) and really release into a nice full stroke.Unclenimrod, could you explain more on what you mean by extension? Thanks!
Sure! You seem to abbreviate your ground stoke swings. You are brushing the back of the ball to keep it in the court. Now you need to add hitting through the ball, really win the moment of contact, in order to improve your strokes. Use your core to load up and let the racquet move through the ball and out beyond the contact point while brushing the back. You are finishing your swings on purpose, whereas an advanced level tennis player's strokes finish as a result of their release. Watch video of a pro's forehand and backhand that you admire, and watch how far their racquet travels in front of them before finishing. You sometimes do this on your backhand really well in the video. Just remember to load up on your legs (even bend the knees some more) and really release into a nice full stroke.
On both your backhand and forehand (but especially your forehand), you take the racquet back over your head during the preparation before you swing. This will make your stroke slow to start (no way to return a hard serve) and also put you in a bad balance (because you are pulling back and up to start). Even if you eventually settle to a good starting position, you are wasting a lot of energy for no benefit. Instead, start with the racquet in front of you at chest height and prepare by rotating the shoulders without raising the racquet. I think it feels like being in swivel chair.
My other suggestion is that you want to get more underneath the ball on your drive/topspin ground strokes. Your stroke now looks like a "U" that starts high, goes down to the level of the ball and the swings back up. Ideally, you want to be looping under the ball and then swinging up and through the ball. The more you get the racquet head under the ball, the more topspin.