Method for producing instruments for modelling the shape of the nose of an individual, said method comprising: - based on an initial shape (F 0 ), representing the initial shape of an external surface of a region of the nose of said individual, called modelling region, as it exists at an initial time (t 0 ): ∘ determining a target final shape (F f ), representing the shape that it is sought to obtain at a final time (t f ), for said modelling region of the nose of said individual, ∘ determining at least one target intermediate shape (F i ), representing a shape that it is sought to obtain at an intermediate time (t i ) situated between the initial time (t 0 ) and the final time (t f ), for said modelling region of the nose of said individual, and - producing, for each of said target shapes, at least one modelling instrument (I i ) arranged in order to be applied and held in contact with the modelling region of the nose of said individual, in such a way as to form an obstacle to the cartilaginous growth of the nose of said individual, said modelling instrument including a contact surface (S i ) having a stable shape that represents or corresponds complementarily to said target shape, thus forming a plurality of modelling instruments provided in order to be applied one after another on the face of said individual with a view to guiding the cartilaginous growth of their nose, method during which: - the current external shape of the modelling region of the nose of the individual is recorded, thus providing the initial shape (F 0 ), characterized in that : - based on said initial shape (F 0 ), the growth of the nose is extrapolated in order to elaborate a final shape, called natural shape (F n ), representing the shape that will be adopted by the modelling region at the final time in the absence of intervention, and - based on said natural final shape (and possibly said initial shape) the target final shape (F f ) is determined. - based on an initial shape (F 0 ), representing the initial shape of an external surface of a region of the nose of said individual, called modelling region, as it exists at an initial time (t 0 ): ∘ determining a target final shape (F f ), representing the shape that it is sought to obtain at a final time (t f ), for said modelling region of the nose of said individual, ∘ determining at least one target intermediate shape (F i ), representing a shape that it is sought to obtain at an intermediate time (t i ) situated between the initial time (t 0 ) and the final time (t f ), for said modelling region of the nose of said individual, and ∘ determining a target final shape (F f ), representing the shape that it is sought to obtain at a final time (t f ), for said modelling region of the nose of said individual, ∘ determining at least one target intermediate shape (F i ), representing a shape that it is sought to obtain at an intermediate time (t i ) situated between the initial time (t 0 ) and the final time (t f ), for said modelling region of the nose of said individual, and - producing, for each of said target shapes, at least one modelling instrument (I i ) arranged in order to be applied and held in contact with the modelling region of the nose of said individual, in such a way as to form an obstacle to the cartilaginous growth of the nose of said individual, - the current external shape of the modelling region of the nose of the individual is recorded, thus providing the initial shape (F 0 ), - based on said initial shape (F 0 ), the growth of the nose is extrapolated in order to elaborate a final shape, called natural shape (F n ), representing the shape that will be adopted by the modelling region at the final time in the absence of intervention, and - based on said natural final shape (and possibly said initial shape) the target final shape (F f ) is determined. <EOS>