please correct this.

This is how I encouraged my friend to make his upcoming project presentation good.

Before you go for your presentation never worry about getting nervous. Just look at it as an opportunity for you to speak in front of a crowd.
A half an hour before your presentation try to focus on presenting in front of these qualified teachers. Its a great opportunity to show them who you are. Do not worry about what will happen if you get something wrong or if you receive negative feedback. Just think about the learning phase and know that the feedback will help you progress more.
When it is time, be prepared to go to the front . At this time you will get nervous for sure! Put on smile on your face. Tell yourself you will be ok as the presentation proceeds.
This is the way you will make your classroom project presentation better.

please make corrections with some suggestions to write this note on advanced way.

Hi! Great job with this article. It is very good. There are not really many "grammar" errors but I will change a few things to make them sound more fluent; more like a native speaker. Hope this helps. Good luck! If you ever need more help please check out my teacher profile. I would love to help you more! :)

Some simple things to remember: subject verb agreement for present tense, verb choice, starting a sentence too many times with a conjunction (and).

please correct this.

This is how I encouraged my friend to make his upcoming project presentation good.

Before you go for your presentation never think you will get nervous. Just feel like its an opportunity you are going to get to speak in front of a mass.
And on half an hour before you go for presentation feel that your are going to present in front of these qualified teachers. Its an great opportunity to show them what you are. And do not think what will happen if i get wrong or if i get negative feedback. Just think you are in learning phase and those feedback will help you for your better progress.
Go in front . At this time you will get nervous for sure. Put oan smile on your face. Hope will be ok as the presentation proceed.
this is the way how you make your classroom project presentation better.

please make corrections with some suggestions to write this note on advanced way.

will help you for your better progress.   -...Will improve your skills (could be an option XD)

Big Hugs!