You need to itemize your budget with breakdowns for advertising and promotions. Include any design, development for needed materials to facilitate the marketing. List the media outlets that will be used to execute your marketing plan and break out the online, social, e_mail marketing, e_brochures/e_catalogs, TV, print, radio, PR, tradeshows, sponsorships, philanthropic partnerships, direct_mail, telemarketing, and other outlets. I would also identify which components that will be completed in house and whether you will have an outside agency to help with your media buying and planning.
First, you will need to have a strong desire to be successful because all successful companies have a well planned and executed marketing plan. Many components comprise their marketing plans and they may vary depending upon whether you are a B2B company, B2C company, a manufacturer, a retailer, a service company, a reseller, a non_ profit or other specialty business.