Resolution should be set to at least 300 dpi (dot per inch). Please note that pictures and graphics pulled from the internet are often low resolution, typically 72 dpi or 96 dpi. Avoid these graphics, as they will appear pixelated and blocky when printed on a banner.
In addition, all photos and images should be saved in CMYK mode (as opposed to RGB mode) when possible. Images saved in RGB mode will likely not print properly. If you are unable to save your image in CMYK mode, please let us know.