Hi!
I've just uploaded in the post below the second tutorial about painting Commander Dante of Blood Angels.
Yes, all of this was painted with a brush, and the brush was Winsor&Newton series 7 size 2.
In the tutorial you can also find a link to the video on which I presented and explained my technique, and the process of creating smooth color transitions on my models.
I hope you like how the golden NMM looks like!
Regards
Flameon