Can I import an image file so it can be used in grease pencil instead of drawing? I would have problems with hand drawn image in Blender due to a stroke.
Specifically I'll have difficulty drawing vertical and horizontal lines with grease pencil. I need to import some line drawings of buildings, and the way that Grease pencil enables you to draw in 3D space appeals to me.
If so How would I import exactly, into Blender generally?