1. An image transformation apparatus comprising: a detection unit which is configured to detect, from each of a user image and a reference image, feature points of a face and angle information of the face; a feature points adjusting unit which is configured to adjust the feature points of the user image or the reference image based on the detected angle information; a face analysis unit which is configured to compare facial features contained in the user image and the reference image based on the adjusted feature points; and an image transformation unit which is configured to transform the user image based on a result of the comparison of the facial features by the face analysis unit.