• long snout: it’s the same length as the head's "brain case" or longer
• short snout: it’s half the length of the head's "brain case" or shorter
• big snout: it’s both long and wide
• small snout: it’s both short and narrow (but not flat)
• tapering snout: it’s thicker at the base and gradually narrows to a point/edge towards the end (wedge or cone shaped)
• blocky snout: it’s very angular and blunt (box shaped)
• rounded snout: it’s rounded or spherical (dome or ball shaped)
• contiguous snout: it’s blends smoothly into the forehead or lack any distinctive separation (depressed nasal stop (nasion in humans), crease/seam) between the snout and "brain case"
• there's no snout / is flat -> skip

Update: this thing has an error, you have to do it manually until it's working again