What about graduating the line? Will that help? Hard to answer this one. Is it to the nape? To the shoulders? Somewhere in between?  Will cutting into the thicker side help, and actually cutting the hair uneven to create the illusion? I've done that many times to balance out a cowlick.

If her scissors are held in her right hand by cutting from right to left you push the hair allowing it to get longer and longer. She should be aware of this and compensate for it by learning to cut in both directions or just being prepared to double check and triple check.

Is the hair soaking wet? Is your head tilted down as far as it can go to smooth it below the occipital bone? I only part the hair down the middle in the back so I can come it over the ears to keep it out of my way while taking sections down. To get a straighter line you can use your comb as a guide and hold it where you want your line to be while cutting under it with scissors or clippers.

I would graduate it under the occipital, this would create a natural tuck and help fight the curl. I would hold up the thicker side with my comb and cut into it about 3 inches when it was dry to thin it out and create more balance.

AMirage

mdg ...

I think you have experienced the sad truth, that many hairdressers don't really have a good, solid, foundation of haircutting.  The issues you have described should not be a big challenge, if your stylist looks at you as a unique individual, and designs with those features in mind.  A great haircut must be YOU ... in all your glory (curly hair, unusual growth directions, and all)  I actually enjoy someone like you, because those very challenges, can actually be used to your advantage.

It's hard to judge your hair with an online description. From the previous post I was under the impression you did not feel the stylist who was doing your hair could figure out what you wanted due to inexperience.

I have one client with unruly curls in the back of her hair. She can style the rest of her hair beautiful but cannot straighten the back. I carved in a stacked A line under the occipital with a wispy hairline. Now all she has to do back there is style it with her fingers in a c pattern behind her ears. The front follows her jaw with long wispy layers. I love the cut. She loves the cut. Told me last week she overheard a woman in back of her at church telling her husband what a nice hairstyle it was. He asked if she meant the color, she replied no the cut! Made my client feel great. The color is awesome too, but that cut even thrills me.

So I totally see where you are coming from saying the cut needs to work with the client. I am glad you found that out and you are going with it instead of fighting it. A lot less stress :).

AMirage