Do we know the artists behind the embroidery ?

I have seen only one of them (the embroidery with the spiders) but not the others like helaena's death or the show's opening (if it's embroidery and not cgi)

I had lots of respect for the embroidery in got and was able to find the one behind it and was hoping to find it again now, especially with à series where one character is known for it !