We cannot stress this enough: presenting a paper is not the same as reading it out loud to your audience. Here are a few basic tips:
Do not read your paper!
Apart from the fact that it is impossible to read your entire paper in the 15 to 20 minutes you will have for your presentation, if you do try, you are missing the point of what a presentation should be and you miss the opportunity to "sell" your paper and your research to the audience. The audience will get bored and lose interest within minutes if not seconds. When you feel you need something on paper to help you get all the important points across, you can write out the presentation and read that.
Structure your talk
Basically. Introduction: Tell them what you are going to tell them - .
Heart of talk: Tell them -
Conclusion: Tell them what you just told them.
Using powerpoint is an option not an obligation.
Powerpoint and similar applications can be used in support of your talk, but they can also be distracting. Do not put too much information on one sheet and certainly not the entire text of your paper (yes, this has actually been done). Keep it clean and simple and limited to only a few. Do not just read what is on the sheet. Your audience is quite capable of reading that and in the process you might turn your back on the audience, which does not help you to connect..
Take your time to prepare your talk, and if possible have a look at the room some time before you have to present to get a feel for the room. Do not just take a deep breath and plunge in, but take some time to give your audience the chance to quiet down and then introduce yourself. Start with a small anecdote or story to connect with the audience and then move on to the serious bit.
If you type "How to present a paper" or something similar in Google, you'll get lots of links to interesting and helpful websites. The structure of Ted talks may be a bit cliché, but they do work.