@SundayRain
Hey that’s hot. I love me some tentacles.
The thing with tentacle is that you can do what you want, really. As long as you convey the 3D-ness of the tentacle.
For example you might want to indicate the cross section of the tentacle by her tail (the one that goes into her crotch) by using crease and fold lines where it
bends.
You can maybe just do little shading on the tentacles just to give them some volume.
Or, if you want to just do pure lineart, then I suggest giving them tentacles some features like segments or anything else that suggests volume and orientation.
Other than that I have no complaints.