Re: How good is your serve?
My first serve used to be pretty good. I was getting good compliments every single week from my instructor. Once I stopped lessons because it was draining my bank account, my serve went crappy as expected. I can hit some nice flat down the T serves on the deuce side, but they aren't fast, and a lot of the times land too central in the service box.
Wozniacki has magnificent shotmaking if you ask me, but it's not the power kind of one. She has to rely on all court tactics to make effective her sweet topspin mix, while still able to hit pretty decent winners when she feels them, especially with the backhand. Despite not making many winners, she's still an agressive baseliner, and she doesn't only win matches by waiting the opponent's mistake, though she can do that at times also.