On receiving your brief, I'll research on whatever service(s) you render, see how to make you stand out amongst your competitors, and put mine and your thoughts together in the form of a design. I'll then send you at least two samples of your flyer, send you water-marked samples of the flyer. Once you've made your pick, and I've smiled to the bank *wink*, I'll send you the CorelDraw, PNG, PDF, Jpeg, or any other file format that will be needed by you.
Every impression must be worth it. Make this one count!