A covering sheet (200) for covering the skin adhesive surface of a device (100) for holding a trachestoma device over a tracheostoma of a patient is provided. The covering sheet (200) comprises: a central/medial element (201) for covering the central/medial part of the skin adhesive surface of a device (100)； first and second elements (202, 203) being arranged laterally of the central/medial element (201). The the peripheral border of the central/medial element (201) is positioned adjacent medial peripheral borders of the first and second elements (202, 203), said peripheral borders being defined by division lines (207, 208). A device (100) for holding a trachestoma device over a tracheostoma of a patient, comprising such covering sheet (200) is also provided, as well as a method for applying such device (100).
