Really....wasn't too bad.
The sewing machine was not familiar, and it had a sharp, instead of ball-point needle, so I knitted up a swatch to try it out on.
I have the front of the cardigan cut, and one armhole.
Class was over (and the room needed for the next class) so I never got to the second armhole.
At my own leisure, I can do it, the button-bands/neckline/placket-facings, and set in the sleeves.
This was not due as a gift until November, so I may put it aside a bit as I work on more baby-clothes.