Using Concepts and Reference Images in Blender
Once you’ve prepared your concept art and reference images, there are several ways to make them available for use as references in Blender. Of course, you can just open your image in your standard image viewer and keep it off to one side of your screen, but you can also use Blender’s UV Image editor, background images, or the image display option for an empty object.
UV Image Editor
To open up an image in Blender’s UV Image editor, select Image▸Open Image from the header, navigate to your reference image or concept art in the file browser, and select Open. Blender should open your image in the UV Image editor. If you then open another image, you can access any previously opened images, as well ...