I wish you wouldn't delete the old versions, so that people can take your progress and process into account when giving more feedback.
I like this new approach to the tail!
A couple of potential concerns before you animate:
1. The character looks rather flat, like a cardboard cutout, because the shadows/highlights are at the edges and don't follow the round form of the character.
2. The arms are hard to read because they blend into the torso and into each other.
Here's an edit that adds more volume to the snake-part and torso, adds a mouth, and adds some more contrast, mostly by eliminating a bunch of colours (18 -> 10) and adding a little more hue-shifting.
