I’m having a bit of trouble trying to get a white stripe all along the front of this model’s body down to its tail, I’ve tried applying a cylinder decal, and ‘flow along surface’ with a white rectangular surface and neither way seems to work. How else should I be trying to make it so the front of the snake’s body has a white stripe along it?
You can use ExtractIsocurve to get curves that flow along the body (you might need to Toggle inside the commande to make the curves flip direction), make two and split the surface so you get a separate surface that you can color.
It may depend on how the seam flows along the body, you can see this by using the technique suggested by jjn.
Looking at your model it would seem that the white part would only be visible from the head to the point where it touches the floor, or else it would twist around and be visible on the outside and then top of the body?
Try splitting the body and working on a small part of it if that’s the case: