1. Hair

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Up, down, or back.

2. Color

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Color can be a big factor as well. You can stay in a certain shade or go for the usual nudes or black and white.

If your turtleneck isn't a dress them next is:

2. Bottoms

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Either tuck in your turtleneck, tie it in a knot or wear it over your bottoms. Unless it's cropped.

4. Shoes

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Picking a pair shoe is pretty easy. Just pick a pair that goes with your outfit and accessories. I think so knee high boots go best with any bottoms.

Inspiration:

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Thanks for reading :)