Hi all,

I am about to start making a long rain/trench coat, based on a Burda magazine pattern from last year. 

As I grade up the standard sized Burda patterns I would like to know if there are any widely accepted ease guidelines.  The coat needs to have enough ease to go over a jersery or suit jacket.

I have made master blocks for tops, shirts, skirts and trousers but have never made a rain coat before.

Any ease guideline advice would be appreciated.

Thank you.