Navigate to a website that offers making and printing banners online.
Choose the size of the poster or banner you want to make from options such as "small," medium" and "large."
Choose the design of your banner or poster from the available templates, or upload a custom design. To upload your custom design, click on a button labeled something like "Upload your own design," and in the dialog box locate your custom design.
Click on a button labeled "next" or "continue."
Choose specifications for your poster or banner by clicking on options like "material," "quantity" and "display options."
Click on a button like "checkout."