How to stabalize / make a serve more precise?

[montrealtennis]

I have been playing tennis for a while... I'm 19 so that's relative. I had never played alot of competative games.. and only started training more seriously a year ago.
I am looking for any kind of suggestion on how to stabalize a serve??
I can provide enough power, I am 6' 3'', to a serve, but end up slowing it down because I lack trustworthy stability..
Is it a matter of just time and practice or are there tips and tricks that you know or have found to work for you?
Also tips and tricks for training precision would be appreciated

thanks

[theace21]

If your ball toss is consistent you should be able to start giving it a little more agressive swing...Most new players have tosses that are not in the same place everytime...