I have all my paper based artwork professionally mounted by my local framer before they leave me to head to their new home. This includes my graphite and pastel portraits which are all done on acid free, archival artist high quality heavy weight paper which almost feels like card. Lovely to work on and great for the mediums I work in.
Betty’s A4 pastel drawing with mounted to fit a standard 12″ x 16″ frame. This size mounts works well for A4 portraits and this frame size is commonly available from most shops and online.