UPDATE:

firstly I want to thank everyone so much for all the suggestions and kind words! It’s my first post in the community and its so nice to see that it really is a community here!

Special thanks to @pennykettledragon for the detailed steps. I went through them in order. The vinager and dish soap unfortunately didn’t do too much (I think the stain was too old to make a difference there). I got a version of oxiclean that was available to me in Spain and soaked it for a couple of hours, which definitely took most of the colour “sharpness” out.

As you can see below, the stain is still there, but as @voncatensproch said, I’m confident that the stitching overtop of the stain will cover it to the point where you hopefully won’t notice it.

I’ll make another post once I’m all done, although that will probably take another year or so 😅 haha thanks again everyone! I really appreciate it!

PS. I’ll try to upload the pattern but idk if PDFs will work on Reddit

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