I need to write a description of my job

Hi, I am a business consultant in the hospitality sector.
I specifically work with companies in order to help them to optimise their income and expenditures.
I analyse their GP, the recipes of their products, where they can save money in the purchases, how to optimise labour costs...
Basically, starting from the Management account that the accountant gives them, I will check where the company can improve.
What I need is a presentation to be sent to new potential customers, I need to increase the number of the companies I support