Question About Modifying a Pattern

I’m in the very early stages of modifying a free pattern published on a website. Basically, I am taking a pattern for a soda can cozy and modifying it for a beer bottle. Although I have found a few free patterns on the web for beer bottle cozies, I don’t like any of them.

So, if and when I finish modifying this pattern to suit my needs - if I choose to publish the pattern (for free, of course), should I first consult with the person who wrote the original pattern and ask their permission to publish the modified pattern?

I just want to do the right thing here.

Thanks for your input.

I can hardly imagine that a can cozy is unique enough to warrant concern over copying it.:??

True, but some people are rabid about their patterns. :shrug: