Another little update for my Guardian of Atlantis piece.
@Wheels: Oh man! I drew some kind of creepy merman underwear model! That has definitely been the belly button of this piece. I never really noticed how low the waistline of his seaweed wrap was, as it stood not much was left to the imagination.
As far as showing where the tail and body meets I think you're right that it's important for unifying the design but I also thought your suggestion for adding a little more armour to increase the warrior look was on the money. With this in mind I decreased the size of the tail to make it a little more proportionate to his torso and completed a second pass on the base of the seaweed wrap thing. Tomorrow I'll add a few plates of armour around the sigil and weave them into the seaweed to give it a stronger relationship with the gladiatorial style armour that you suggested I look at. I think the gladiatorial armour pieces fit really well with the guardians personality as an extremely aggressive warrior who is more focused on attacking than defending himself. Hopefully these changes will help to solidify the design as a single figure despite not showing where the torso and tail join.
Your advice was as always welcome and has helped contribute to creating a stronger character which is the most important thing. Colouring can always wait another day or so.