Practice in Tennis question?

I mean your pretty much doing what you should be doing which is just repetition, but you may want to serve two from the deuce side and two from the ad side (rotating like you would in a match) so you can get used to your first and second serve. If you can you might want to see if you can find a tennis coach or someone that knows tennis pretty well who could watch you serve and see if there is something that you are not doing. I know for me it took me a long time around 2-3months to get a decent serve. You just have to keep working hard and you'll get it because it is all about the consistency. You can also look online for instructional videos on how to serve if you want to get a better grasp on it or find a tennis player who you think has a similar serve to you or you just like and watch them serve, to see if there is anything you should do differently.