The idea here was to combine the three children of Loki--
1) Fenrir (eldest child, thus acting as the base)
2) Hel, goddess of the underworld who is beautiful but has decaying flesh (exposed flesh and bones on critter)
3) Jormungand, serpent (snake + swirl elements)
Some key phrases used:
"They put a sword between his (Fenrir) jaws to prevent him from biting." -- Instead of being placed horizontally in the mouth I thought I'd have the sword locking his jaw vertically, hence the design.
There was also mention of a ribbon that Fenrir could not break free of and was bound to, so i had the ribbon woven into him.
Was kinda rushed and i'm not very pleased with the design... but learned quite a bit from it.