Creating Logos - Export Image Size Based on Artboard Size?

Hello, I’m new to Vectornator and only a beginner in graphics design. Based on some experience 10+ years ago with Fireworks, I would flatten the layers and export the design to a jpeg or png file. Once exported the image size was just the logo, not the entire artboard. With Vectornator it appears that I need to start my logo design by first creating an artboard that matches the size I want the logo to be. Is this correct? Or, is there some way to properly size the image to hold only the logo when I’m done? Thanks!