Ahh, I’m glad my other tutorial was useful! Hmm, necks can get weird when they’re twisted/at odd angles, but I’m going to assume you mean standard posing.
What is most helpful is to observe that in your reference the neck shape is strongly effected by the trapezius muscles. Here’s an example:
Two for one neck reference! If I’m drawing a portrait I’m kind of bad in that I don’t draw a complete gesture line through my figure, although if you’re having trouble I think it could help. Here’s how my sketches look after about 20 seconds:
This is what you don’t want to do. Two curved lines is going to make it look like a doll’s neck, when you want it to look natural. There’s a spine in there, and a lot of muscles anchoring that neck to the clavicle and shoulders.
Even if it’s not visible in the final drawing, I usually draw in the clavicle.
I’ll do one more example:
Even though you can’t see her neck very much you can still use the shoulders to help you anchor the neck and keep it more natural looking. This is why while I don’t always draw the neck in my gesture, I am always sure to be careful about the position of the shoulders!
Ahh I hope this was helpful, let me know if you have any trouble!