I hope this question is on-topic -- I'm not a knitter myself, and won't be attempting to knit anything you suggest -- I'm actually trying to write a story. I want to show one character realising that another one knows her stuff when it comes to knitting, so ideally it would be something that's not obvious to someone without some expertise. It would be good to use a jargon word or two, if that fits -- while avoiding writing anything that sounds ridiculous to people who know the subject well, of course (the way any treatment of "hacking" in early films and TV series does to programmers...).
It will look something like the following, where phrases in brackets show areas probably in need of improvement (but feel free to make other suggestions):
[Foo-stitch]? Her eyes shot straight to the [shoulder seams], looking for the telltale [bunching], but there was nothing but row upon row of perfectly even [colourful synonym for stitches]. Row upon row upon row.
"Well? Is it any good?" Dan said.
She swallowed, and put it back down. "Yes," she said quietly. "It's good. It's very good."
In case anyone's interested, what happens is that a glamorous new housemate arrives, and the main character finds to her surprise and dismay that she is actually very good at knitting -- something the main character had thought of as being "her thing". The crisis sharpens further after that, but it's eventually resolved :)