Sorry for the wait mate.. Was busy spamming zombiesdash.com and forgot to update here.
Hoodie was honestly a bit of a playground. I used the badger miniature paints. General process is below.
Base coat entire hoodie: coal (very dark grey)
Painted in the folds: 1:1 raven black (black) and coal
Highlights/highpoints: 2:1 coal and rock (mid tone grey) and instead of usual highlighting method I tried to keep it quite widespread on the top of the sleeves and top half of the hood.
Around the pocket, under the edge of the hood, directly under the sleeves and for lining details on the hoodie: straight nuln oil pin washing.
Edit: forgot to add when I did the stripe I actually used he same method but in orange so the orange 'shadows' match up with the darker black and then a very dark line that runs the same intersections as the black lining. Just pulls it together as one piece more than flat orange painted on black.
After playing with a ton of different colours and reading different tutorials I realized it was more about staying to a dark grey and being more strategic with colour placement to make it look like 'material'. For the record, I did the same thing with 'oscars' jacket but in green tones.
Irl it looks like a big cushy jacket so pretty happy with the process.