HELLO! It's me, Desseruh (on Ao3), Inkin-Oddity (deviant art/Twitter) and DeadlyWolfQueen (on fanfiction. Net which may or may not be shut down)
I realized that I use my own brand of Sesshoumaru for my fanfictions (Yield, Seeing Eye, etc), so I sketched out a few. I posted these to the Sesskag Discord, and everyone there was very nice so I have enough confidence to post them here. (I do not draw humans too often so I hope to improve them at some point, please be nice).
Scarring due to the Wind Scar that introduced him to Rin. I know scars on demons are fairly uncommon to portray, but I want them.
Next is his mouth and tongue.
In the anime and the manga, he has a frayed edge to his tongue when in his true form. I find it charming and I want his human form tongue to match.
Dog teeth. Dogs have 6 incisors, primates have 4. I like the idea (much like Father Gascoinge from Bloodborne) that Sesshoumaru's teeth align much the same.
His arms have three stripes (early anime and manga? Not sure if it changed), I just didn't sketch it.
In my own headcanons, there isn't deliberation on what the pelt is: it's his tail. He has fur that grows around his right shoulder and over his ribcage, which then follows the path of his spine down to a long tail (like a Russian wolfhound/borzoi tail). This is different than the anime and manga because there is a separation of it from his spine.
Kouga and Shippo have a tail, so Sesshoumaru cannot escape it.
Anyway thank you for reading my brainworm. I have other headcanons for the Inuyasha-verse so maybe I'll doodlepop them someday as well. Love you guys, byyyyyyeeee. Some day I hope to draw fully rendered fanart of them, but time is not on my side this month.