Practice Makes Perfect
No it doesn’t.
If we took out a chess board right now and started practicing would we become perfect at it eventually? Not even close because most of us don’t know what or how to practice chess. We have no understanding of advanced chess tactics like trapping, gambits, checkmate patterns, opening principles, and compensation. The point is that it takes a lot more than just practice to get really good at something. As the updated saying goes, perfect practice makes perfect.
To get better we need feedback, to do research, watch the greats and then practice to perfection; and the same applies to presentations. Reading through your notes before your big presentation isn’t going to cut it. Start to vocalize your presentation in your home and we are getting somewhere. Placing note cards around the room as stand-ins for your audience to practice eye contact and speaking aloud - now we are getting somewhere. Gathering up co-workers, friends, or even family to present to and get their feedback while video recording yourself, now that’s the ticket. That is getting close to perfect practice, that is how you will improve the fastest, and that is how you are going to knock every presentation out of the park.
Sometimes any practice is better than no practice at all, but whenever possible try to make your practice, perfect.