And you don't want moisture in the camera. Shoot multiples of your work. It is cheaper to shoot original photos of the artwork rather that make duplicate slides from the original. So, if you are comfortable with your camera and its settings shoot many originals at the time you set it all up rather than reshoot or duplicate. Also, images are always better in the first generation.
Reproductions are inferior to the original.
If you do not know what to expect from your camera, you may be well served to shoot a test roll of film before you need photos. Keep a record of the camera setting, light setup, etc. But, if you are down to the last minute and need it quick, there is a way to shoot that provides a little insurance. Bracketing is a method that will usually provide you with the proper exposure. Proper exposure of the image is important.