To present might be overwhelming. Here are some tips to lower the experienced stress before different typs of presentations.
Design a poster
As a research student you might have to create several posters for different conferences and it should always have just the right amount of text and images to be well-arranged and easy to grasp for outsiders.
Collin Purrington has a web page about designing a poster which mediates your research in an efficient way. There are templates, concrete tips of dos and don'ts, e.g. not to make your poster too long, to use italics instead of underlining, to use graphs when possible and to use high resolution images if you need to use images.