パーティー写真に人物を追加する

Add the man from Figure 2 (middle-aged, black hair, tan skin, brown patterned jacket, blue polo shirt) into the birthday party scene from Figure 1. Place him naturally among the family group near the cake and balloons, as if he was part of the celebration. Make the lighting, shadows, and perspective blend naturally with the scene. Do not alter any other elements or people in the photo.