Here are some questions which can lead you in making a good presentation in promoting your new product
1. What is your product?
2. What are the differences of the product compare to the similar products?
3. Is the price competitive?
4. How can people get the product?
5. What can people do if there is a problem with the product?
6. Is there any guarantee to the product?
By preparing the answer for each question, so you will be able to make a good presentation with systematic ways. For the example of the presentation, or steps which should be followed, can be seen HERE