Summer cardigan

I have huge cone of a random 2 ply tweedy yarn that I got from a bin end.  This is one that I often use for tiny 12th scale jumpers...

...but I was never going to get through it that way and it has been sitting there asking me to do something with it.
I found this lovely pattern for a summer cardigan from Ravelry Spring Fling so with a bit of tweaking here it is:

I'm still waiting for some summer weather to wear it, but it looks a useful lightweight cardigan.