A method, comprising: at an electronic device having a display apparatus and one or more cameras: displaying, via the display apparatus, a virtual avatar, having a plurality of avatar features, that changes appearance in response to detected changes in pose of a face in a field of view of the one or more cameras; while the face is detected in the field of view of the one or more cameras, the face including a plurality of detected facial features including a first facial feature other than a tongue of the user, detecting movement of the first facial feature; and in response to detecting the movement of the first facial feature: in accordance with a determination that the tongue of the user meets respective criteria wherein the respective criteria include a requirement that the tongue of the user is visible in order for the respective criteria to be met, displaying an avatar tongue and modifying a position of the avatar tongue based on the movement of the first facial feature, including: in accordance with a determination that the first facial feature moves by a first magnitude, modifying the position of the avatar tongue by an amount proportional to the first magnitude; and in accordance with a determination that the first facial feature moves by a second magnitude different from the first magnitude, modifying the position of the avatar tongue by an amount proportional to the second magnitude; and in accordance with a determination that the tongue of the user does not meet the respective criteria, forgoing displaying the avatar tongue. displaying, via the display apparatus, a virtual avatar, having a plurality of avatar features, that changes appearance in response to detected changes in pose of a face in a field of view of the one or more cameras; while the face is detected in the field of view of the one or more cameras, the face including a plurality of detected facial features including a first facial feature other than a tongue of the user, detecting movement of the first facial feature; and in response to detecting the movement of the first facial feature: in accordance with a determination that the tongue of the user meets respective criteria wherein the respective criteria include a requirement that the tongue of the user is visible in order for the respective criteria to be met, displaying an avatar tongue and modifying a position of the avatar tongue based on the movement of the first facial feature, including: in accordance with a determination that the first facial feature moves by a first magnitude, modifying the position of the avatar tongue by an amount proportional to the first magnitude; and in accordance with a determination that the first facial feature moves by a second magnitude different from the first magnitude, modifying the position of the avatar tongue by an amount proportional to the second magnitude; and in accordance with a determination that the tongue of the user does not meet the respective criteria, forgoing displaying the avatar tongue. in accordance with a determination that the tongue of the user meets respective criteria wherein the respective criteria include a requirement that the tongue of the user is visible in order for the respective criteria to be met, displaying an avatar tongue and modifying a position of the avatar tongue based on the movement of the first facial feature, including: in accordance with a determination that the first facial feature moves by a first magnitude, modifying the position of the avatar tongue by an amount proportional to the first magnitude; and in accordance with a determination that the first facial feature moves by a second magnitude different from the first magnitude, modifying the position of the avatar tongue by an amount proportional to the second magnitude; and in accordance with a determination that the first facial feature moves by a first magnitude, modifying the position of the avatar tongue by an amount proportional to the first magnitude; and in accordance with a determination that the first facial feature moves by a second magnitude different from the first magnitude, modifying the position of the avatar tongue by an amount proportional to the second magnitude; and in accordance with a determination that the tongue of the user does not meet the respective criteria, forgoing displaying the avatar tongue.