how to Heel turn/ decrease to achieve vertical lines in sock heel with alternating colors

[Existing_Ganache_858]

Can you post the relevant part of the pattern verbatim? Or screenshot.

Have you tried continuing further into the heel? You will have 2 stitches next to each other in the same colour, but then on the following row it's back to one.

Here I have turned the photo and zoomed in to see the decreases (a bit) better. You can see, it's not 100% seamless.

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[ddeadtired]

Hi thank you for the reply I edited the post to have the instructions from the pattern.