Nice little step-by-step. I note that you only use two steps for your red, I personally tend to use about five or six depending on if I'm going to add a blazing orange final highlight. I have relatively recently discovered that using the foundation red, with a red was and a blood red highlight works quite well on its own for a quick result though.
Talking of which, on the subject of painting white, specifically white cloth. I think that there are two main routes for this, the grey route which you've gone for, and the brown route which I ended up using for my Reiklanders. As the main colour is white, without having to worry about quarters (I had started doing Averlanders, I didn't get past painting a single strip...), I use a black undercoat, bestial brown 'gunk brush', then followed by a skull white 'gunk brush', which is followed up with a clean 'once over' with skull white before moving onto re-painting the details in black and then working back up from there.
I really should do a step-by-step one of these days...