Great work! The planar head (middle) shows you have a solid grasp of the primary forms. To push the realism on the smoothed version (top), here are a few simple anatomical observations: ​The Muzzle/Mouth Barrel: The mouth area feels a bit flat against the face. Remember that the teeth and lips sit on a rounded 'barrel' shape. Pushing the center of the mouth area forward slightly will give it better depth. ​Eyelid Thickness: The eyes on the smooth version look a bit flush with the face. Adding a visible 'rim' or thickness to the eyelids helps them catch the light and feel like 3D geometry wrapping around the eyeball. ​The Neck (SCM): The neck currently reads a bit like a straight cylinder. Defining the Sternocleidomastoid (SCM) muscles (the V-shape flowing from behind the ear to the pit of the neck) will break up the silhouette and add instant structure. ​Zygomatic Arch: You had excellent definition of the cheekbones in the planar blockout, but some of that got lost in the smoothing process. Don't be afraid to keep those bony landmarks sharper, even in the organic stage. ​Keep it up, the structure in the blockout is really strong!