How to do this...?

Sorry if i bother but after googling and going through books about knitting i still can’t figure out how to do stuff like this…do you make that spiral as you go, or after…I just want to get a general idea of doing this, it doesn’t have to be a spiral
TY all in advance and happy knitting

The picture is too tiny to be sure but I think it it would work out well to do after. A crochet hook could add it as surface embellishment after the knitting.

sry about a bad pic, i couldn’t get a better one, i just found it somewhere on the Internet;
ty for answer and yeah, it looks like you said;
actually i can’t even imagine how could you do something like this while knitting, but you never Know :wink: