Google for images of "photographic copy stand" and you will get lots of ideas as to how to set up your camera and lights to do this. If you have a tripod that will allow you to invert the center column so that you can place the camera underneath, between the legs, that will probably work for the camera support. As far as lighting goes, it's important to light the subject as evenly as possible and at an angle that avoids glare. For photographing artwork do everything you can to ensure faithful color reproduction -- at least set a custom white balance and shoot some "calibration" shots of something such as white/black/gray cards with known RGB values or a ColorChecker Passport if available.
In my experience it seems to be easier to do this with the copy or artwork flat on a table and shooting from above, rather than trying to photograph something hanging on a wall.
Nice job on those fjords, by the way. 