I made the shirt below for a guy at work using 1977 Style 4388. It's essentially a pyjama top but Jeff was happy with it as a loose fitting shirt - I just added more buttons. The overlap around the collar at the front can be reduced by putting more buttons in higher up (which is what I did). I'm not sure if the pattern is close enough to your photo or not - I could be super way off but thought I'd share the pattern I've used just in case. Please excuse the photo - the shirt does look better on - in the photo it just looks like a gigantic shapeless mess!