Rebuilt presentation deck

Hi,
I have a presentation deck that is too old. I need to renew it. It is just 16 slides for now. What i need is :
- New template (try to keep the same color scheme, if possible but I am open)
- New way to displaying data (charts graphs, images, inforgraphics etc.)
- Bring the wow factor in the deck.

It is my company's introduction deck and I am not good with making presentations. Surprise me