It is often the "finishing touches" which really bring your trophy to life.  Reference photos are used to assure accuracy.  Sculpting epoxies are used around the eyes, nose and lip areas.  Pin holes are filled and blended in.  Airbrushing is done with the proper colors for that particular species.  Eyes and noses are glossed for a life like appearance and the hair or fur is brushed into place.  It is the small details which often make the difference.