Care for the original drawing -  I spray my artwork with professional-grade workable fixatives throughout the development of charcoal and/or graphite, and pastels drawings.  The completed art receives several coats of art industry-grade final fixative for protection of the drawing while preventing smearing and sealing the artwork.  It is best to mount, mat, and frame your fine art under glass, and hang on studs in an open wall for display in an area where everyone may admire your cherished artwork.  Clean the framing and glass according to the frames manufacturer’s instructions.