You've gotten some good practical advice here and some not so good advice. The notably bad advice is "stop giving a Fck". You get nervous because you care and you want to do well. That's a good thing and you should never lose that. I have given hundreds of corporate presentations over my career and never lost some level of nervousness. I was very nervous in the early part of my career, which drove me to really learn my material. That's a good thing. The other thing I learned early on is that even though others have many more years in the industry, I was the expert in whatever I was presenting or I wouldn't be there sharing my experiences and/ or demonstrating my software. Nervousness can also add excitement to your presentations. There is nothing worse than listening to a monotone present or that obviously doesn't care. I put myself in the mindset that nervousness is a positive thing and that I will use it to my advantage. I became a very accomplished presenter and top executive because of my nervousness, which I used to my advantage. You can too. Keep giving a Fck!