I have waited for the right moment trying out this Marfy pattern. It's from the catalogue 2014/15.
It has a nice square neck and to pop it up I've used the technique with peter ribbon.
Enclosed a picture from BurdsStyle.
Black linen is great sewing with, and it makes it special with the back length a bit longer than in front as well.
I wasn't sure to put on the short sleeves, and I think it was nice without as well, but then I can use it even if the weather is a bit colder :)