Okay, here's something might be a little helpful, but I'm not sure. Hey Jei-Cos
, thanks for providing a larger picture of the original. It was getting hard to squint
Anyway, it's something a little similar to what StarsOfCassiopeia
mentioned, but maybe a little easier.
Simplicity pattern 1419 Lisette http://images.patternreview.com/sewi.../1419/1419.jpg
All you would have to do with this pattern is just add sleeves, the kind that StarsOfCassiopeia
said and then tweek the collar at the top just a bit.
As for her apron, you can either look through pattern websites like Simplicity, etc., or look on Youtube for how-to tutorials.
I can't give you any advice on armor due to that's not my field of expertise
Anyway, good luck