Here's the original texture sheet:
The wiki currently states:
The problem is that I can't find a Princess Gwynevere avatar. I'm guessing it doesn't exist? We may have to take another look at how many votes are needed to correspond with each avatar.
A message with a rating of 0+ has a Undead Merchant avatar.
A rating of 100+ will change to a Solaire of Astora avatar.
A rating of 200+ will change to a Domhnall of Zena avatar.
A rating of 300+ will change to a Darkmoon Knightess avatar.
A rating of 400+ will change to a Princess Gwynevere avatar.
A rating of 500+ will change to a Primordial Serpent avatar.