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.