Use a logical structure
Here is a simple logical structure to help guide you as you present a slide:
First, let the audience know what they are looking at. Be careful, however, just like in your overview and when you are using signposts, not to waste this opportunity to showcase your excellent communication skills. Use variety in the language you use:
The horizontal/vertical axis…
The audience can already see your slide, so you don’t need to spend too much time on this:
As you can see sales have fluctuated significantly.
This is the part that you can really add value by explaining what the audience cannot see, the background for your images. This often involves explaining causes. Again, variety of language is recommended:
because (of) therefore
due to consequently
as a result (of) leads to
Finally, before you move onto your next slide, conclude by emphasizing the main point of the slide:
The important thing here is..
What I’d like you to remember is..
The thing I want to point out is…