I see what you mean about the noses - I'm wondering if it's just the lighting that makes the nose on the left not look straight. I think the mouths look the same - the way they curve at the corners. The lips also appear to have the same amount of fullness. I also think the shape of the chins and brows are the same. Yes, shame we can't see the ears.
Hard to say if there's a difference in eye colour - possibly just the different tones of the photos.