Preset Turns out "Scribbles" >.<

[EmptyHabits]

Hewlp plez. I'm making a preset, this is my second time making a preset. The first time I made a preset it did not do this. And this is very frustrating. I am making a preset and the head as a helmet or whatever around the eye. I've tried to check it multiple times. (Using Gimp) I have zoomed in 800px to make sure there aren't any scribbles or uneven lines. I am not entirely sure how to explain it, so I'll provide a picture.

See how it's so squiggly?! How do I fix this!

[PrettyReckless]

T'is due to the character models.
The face/body isn't 100% straight, it will be bulky etc.
Takes some time getting used to and you may have to re-do the marking a couple of times but you'll get there in the end.

The marking will never end up looking the same as it does in Gimp.
Takes practice and patience to get things looking the way you want unless you're a very skilled preset maker.

[EmptyHabits]

T'is due to the character models.
The face/body isn't 100% straight, it will be bulky etc.
Takes some time getting used to and you may have to re-do the marking a couple of times but you'll get there in the end.

The marking will never end up looking the same as it does in Gimp.
Takes practice and patience to get things looking the way you want unless you're a very skilled preset maker.

It looks perfect on the feline model but it looks awful on the canine model. And I'm using chead ;-;

[Spottedbears]

As Ressy said, this is because of the surface of the canine model.

The marking will stretch to fit over the head, therefore giving you this effect. I don't exactly know how to explain this, but if you try to follow the triangles on the UV you'll probably get a better looking marking.
The reason that it looks fine on the feline model despite the fact you're using CHead is because of the cheeks on the canines - as you most likely very well know, there's a cheek slider. This stretches or shrinks the (very pointy) cheeks which are most likely affecting the way your marking looks.

[AutumnTheWulf]

Try making your markings a bit smaller and less thick and It should be better.