I'm planning on making my own winter coat this year, which is a bit ambitious as I've never done anything like that.
This is the drawing I made (please excuse quality, my software is crap)

My intention is to make it in a nice boucle in reds, with a contrasting lining, since the collar folds down and the sleeves are open and you can see the inside:
Exterior

Lining

I need some advice regarding pattern drafting and also, I've never lined a coat. Any advice on that?