My first ever singles (USTA league) match is tomorrow evening at my home courts. I've played doubles for a little over a year now and I'm playing on two leagues this fall (men's doubles and singles) for the first time. I'm a little nervous and excited about playing solo in singles competition, especially my serves. I have a flat, medium strength serve that I plan to stick with until I lose multiple service games. I've been experimenting with a slice serve, but I would rather not use that in competition until I'm a little more comfortable. Any suggestions/tips for a first timer? I feel kinda of like a little kid on Christmas eve.