I am 33, and my shot technique has improved, as I dont try to bash the hell out of the ball anymore, and allow the racquet to follow through. My first serve is a strange one, as I don't try to belt it as hard as when I was a junior, but my speed and weight is faster. My second serve however has gone from being a huge kicking/slice weapon when I was a junior, to now just hoping to get it in. Lost all confidence on it.
As I spent a lot of years not active in sport I gained a lot of weight which I am slowly bringing back down, my movement is terrible, and find that I have to out hit my opponent to avoid being run around.
Having said that, as a junior, I used Pat Cash as an example to aspire to, and I was very fast and agile on my feet. I used to and could run everything down, and the longer we played, and the hotter it was, the more I enjoyed it. That is not the case now days.. Now I have to hit deep and with alot of weight. I guess I have to bully my opponents more now. But I am trying to get the weight off, and I know my game will improve as it does..
It gets very cold here in Japan this time of year, and all but indoor sports cease, so its hard to keep in a rythem. Plus the lack of talent doesnt help either..