When the concept first appeared, I threw this sketch together:
Then I added the rest of the deail:
And did a first (horrible) attempt at coloring:
Utterly horrified by the result, I went back to the sketch, modified the pose and some detail:
The magitek eye was in limbo at the moment, so the eyepatch version was found about 20% cooler:
Then I colored it in my usual way:
And then added some final tweaks:
That was the final iteration of that version, this lil' avvie not counted:
Then, later, I went on to try a different pose, something cooler-looking.
The magitek eye was still in limbo at that point, but the eyepatch would have to go on the foreground eye according to the story, and so the design ended up with both eyes intact:
Thankfully, no redesigns were deemed necessary, so I went straight to coloring. I see now that I again colored the tail in the wrong order, but at the moment I'm somewhat too lazy to fix it.
That's the final iteration of that version.
There is another one currently, which established the design you could see in the tree-slashing image I posted, but I'm not posting it until the fate of the second chapter of the story is clearer, specifically because it's from a part I was instrumental to the writing of. But I again colored the tail wrong... *headdesk* I really should pay more attention to the designs of the characters I'm drawing.