If you successfully worked your way through the first slides of your pitch deck, you and the investors should have agreed upon the fact that there is a huge problem you are willing to solve. That is a good start!
Now is the time to show how you will solve this problem.
Always try to present your solution most realistically and innovatively. If you have a physical product, bring it - investors love to touch and play with it. If you have a digital product, show demos, mockups, illustrations, or videos of it, you want to impress the investors with everything you've got so far but also the things you will add in the future.
For some products, it is also a good idea to develop a story that demonstrates how your product delights the life of your future customers.
BaseTemplates ProTip:
Most entrepreneurs underestimate the fact that VCs look for amazing people than for great ideas. To show them more of your ability to solve the problem, take the investors on a journey of how you found the solution. It is a nice way to demonstrate your thinking patterns and to build additional trust.