Shirts and collars...now with wings!

Sorry that just sprung to mind when I was searching for a winged collar to finish off my Doctor Who costume. ;)

I looked everywhere for a ladies winged shirt. Nowhere could I find one. I was contemplating buying a men's one and adjusting it. When it dawned on me I could just get my 'go to' shirt pattern and modify the collar. The thing is I needed the flat plan of collar shape to at least reference.
Doing my research I came up with a few images.
This one shoes a detachable collar detached and yay I can see the back. And this one the collarless shirt.
Looks like if I add a button hole to back of the collarless shirt and corresponding button on the stand up collar then find some way of attaching the front. Maybe I can cheat and used a split pin?

I also managed to take a look at some collars at the Beamish Museum and ask a few questions on holiday. Should have taken come close ups really. Also stumbled across a blog post from someone making one (at last).
Looking at the top image and comparing it to a few book images. I think his style of collar is maybe Newmarket?

Historical people I'm sure you'll know.....
Next question is sleeves I have a shirt pattern in my stash with long sleeves and cuffs. eeep! Cuffs. One of my nemisis. Those will not be detachable though.