very nice. also try photographing a jump serve from an angle low to the ground like I did here: [link]
Set the camera in Burst Mode and wide angle so make sure you get her and the ball in frame. Then hold it as low to the ground as you can. When the server starts her run hit the shutter button and hold down it as you follow (pan) the server. It may take a few tries before yo catch the correct positioning but the results are awesome.
Since you're shooting wide angle you'll have to crop the photo to make it closer to the server.
Do the burst mode technique from behind a jump server. Awesome results!