While there are many free options available, we've selected two that really deliver in terms of ease of use and functionality: InVision and Marvel. Although InVision does offer more advanced, paid plans, you can get started with one prototype at no cost. As for Marvel, a free plan will grant you access to unlimited projects with no limits on time.
Edit: This step is where you get to put on your artist hat and modify your design. Don't rush this process and make sure you inject your own flair so this truly represents what you and your company stand for. You can either start with the font selection or get straight to the graphic. You can customize colors, effects, layout, spacing and more. Before you finalize your design make sure you get some feedback from family, friends or business partners.