What is needed for successful presentation (Research)

So on Thursday, there was a sample presentation by Carrie which i thought was really successful. I'd like to jot down a few reasons that made presentation awesome and should try to incorporate those in my presentation too.

• Know what you are doing. Carrie seemed like she knew what exactly she was doing like an expert. She was able to tell a lot of information related to slam poetry to audience and it kept them interested.
• Talk with a passion. She also really liked what she was doing and was eager to tell us what happened during all the process. 
• Gestures and eye contacts. This is the most basic stuff about presentation, but still the hardest thing to do for some people. I am one of them since I haven't done a lot of presentation in my life. Carrie enthusiastically used her gestures and made an eye contact with audiences, which kept everybody in focus.
• Talk about every detail that happened during the project. 6 months are not short time. There must have been a lot of tings that went well and bad. She told lots of stories about those and I was able to picture in my mind what she has been doing so far
• Excellent Q & A session. After the presentation was over, she was able to answer many different kinds of questions with a great fluency. It's probably because she knew everything she did in depth and this made her seem like she was an expert about this field.

These were the things I took notes on, and lastly, practice makes it perfect.I'm 100% sure that it wasn't her first run. Judy even mentioned that she has practiced a lot throughout the day of presentation. Since mine is after a weekend, i should devote all my time practicing the presentation to finish it without any flaws.