Here's a photo of mine. I started by printing the 2 pieces of pattern to fit on 2 sheets of A4, and made a miniature 'doll sized' jacket, to work out how the pieces went together. I then made a life-sized version out of calico, to try out the fit.
Finally, I made up the real one. I bought this winter-weight fabric on sale (it's end of Winter down here in New Zealand) for $6 a metre. I bought 4 metres. There's a lot left over, but I needed 4 metres for the length.
I'm pleased with how it came out. I didn't put the magnetic snap in, I'm just going to wear it with a pin. I wore it to the office today with a business shirt, and it looked awesome! I think I'll make one out of grey sweatshirt knit next.