@Ash I do not, but you talking about the twist of the torso makes the pose make a little more sense - and I understand now why I didn't notice it in such a way on the shaded/coloured version.

Wish I could study anatomy more... Keep it up. Thanks for posting your WIPs!

@AnimeCanuck I had the same feeling even after proving to myself that I was being paranoid. Something about the angle, the way she's stretching, and the way she's twisting her upper torso away from the lower torso. There are plenty of lines that coulda been drawn better (the arm, neck, and face shifted on me), but the placement of the boobers is true to the reference. I'm thinking the reason the color one looks more natural is it's hard to tell from the lineart that the torso is doing what it's doing, what with the lack of shadows combined with my not going into too much detail there.

If you have access to a kindleunlimited subscription, the pose is in one of these. Alternatively, here's one and another.

I know this is late because I saw your fantastic darkly coloured version, but the right breast is too high up. Actually the one on the left would be more likely to be up like that, being stretched by the lifted arm. So it's kinda like they're reversed. Not by a lot, mind you, but by enough that I can notice it on your lineart only image. Possibly you already fixed it in the coloured version, I didn't notice that there. Looks awesome and I want to use this as a pose reference for myself! :D