You surely need to boost up your confidence before stepping on to the stage. You might feel some nervousness before giving a public speech or presentation, it is natural and even beneficial, but too much nervousness may lead to degraded performance.
To have better presentations you may
High-quality graphene is strong, light, nearly transparent and an excellent conductor of heat and electricity. Its interactions with other materials and with light and its inherently two-dimensional nature produce unique properties, such as the bipolar transistor effect, ballistic transport of charges and large quantum oscillations.
For the common man, the following
The difference between a crowd n an army is the way they know how to do things. The army works as one unit with each one performing their designated responsibilities to the their best. This is the simple secret we need to know that success in any industry doesn't just depend only on motivation, rather training is also essential for performance.