How should I control my nervousness, so as not to disturb my presentation on the day of a conference?
I don't want my nervousness ruin my first academic presentation in a conference and the huge research my co-authors and I have done in the research paper.


You being nervous will not ruin your research. Everybody knows that PhD students (or professors!) are often nervous when speaking at big conferences. No sane person will look at you being nervous, and hence deduct that your research has to be somehow faulty. Of course, everybody wants to be perceived "cool" in research talks, and it is certainly easier to do a great conference presentation when one is not too nervous (a little bit of tension helps, though). However, you should never forget that very little actual damage is being done if the audience sees that you are a bit nervous.


  How should I decrease my stress on the day of my paper presentation and better control my nervousness in my presentation?


The best remedy for being nervous are (1) knowing your material / presentation really well, and (2) having a lot of practice (not just for this specific presentation, but of presentations in general). You do not sound like you are very experienced giving talks, so some amount of nervousness is not troublesome at all. Prepare your talk early and do at least 2 to 3 test talks in your department, until you have convinced yourself that your talk is good.

You'll probably still be a bit nervous on the big day, but don't be too hard on yourself - a bit shaky hands are not going to be any problem.