Here are my tips:
Great title (If not serious, add a pun)
Cover the entire topic, if you hear a word you don't know, probably add a definition.
Pay attention to grammar (If serious. Use grammarly if you don't know grammar that well).
Make a script! Don't constantly look at the board. If you can, do it without the paper.
In the end, add an ending slide so you're not constantly tapping the board thinking it's not working.
Also ask the audience if they have any questions.