Your results may vary, of course, and it genuinely does get easier the more you do it.
If you’re not used to writing for speech, you may find your text sounds a bit formal or stilted when you read it out loud. Practice listening to yourself and notice spots where the wording is awkward to see, or feels too dry. Here are some options to consider:
In the beginning, you might need to read the whole text, but over time, try to wean yourself onto a bullet list of key points and practice from that. If it’s a longer speech, try practicing in segments. Run through your opening minutes a few times in a row, or your closer.
An effective talk makes use of rhythm - there will be parts where you can breeze through quickly, and parts where slowing down will help make your point. Experiment with your pacing, your slide changes, moments to be expansive and moments to be still.
When time is tight, it’s important to make the most of your practice sessions. Some ideas:
Probably everything will run smoothly on the day, but it’s good to think through what might happen. Could you deliver a talk without notes? Or if your slides aren’t showing up? What if the microphone doesn’t work and you need to project? It’s better to have confronted the fear, and come up with a plan, even if you never need it.
When you’re at the point that you know your deck and talk well, you can run through it without too much stress, and find more natural ways to work through your points.