ideally you have moderate cranio-facial geometry.
midface not too short, not too long. Face not too slim, not too broad. Features not too masculine, not too feminine. Harmonic mix btw neotonic and progressiv features that all together convey associations of youth without infancy, maturity without senility, peacefulness without weakness, K.Reeves is one ideal example of this. Adam Driver is still within those categories but with a slightly more bizarre proportions, which is not a deal-breaker in itself, 80% of optimum is not a bad thing.