I just knit up a vest back, that I made a pattern in a knit/purl kinda fashion. It is a square maybe 5 x 5 ins.
It kinda puckers in the back, and is dipped in in some places and sticks out in others…
This is an acrylic yarn, so I am not sure that I can block it flat.
I was thinking, do you think a square of fusable interfacing ironed on to the back of that pattern might hold it flat(er)?