I guess I don't have to tell you how to do the sketch. ;)
Anyways, once the pencil sketch was clean and finished I started to draw the outlines with the Copic multiliner black (size 0.05). For the wind I used the Copic multiliner in sepia (size 0.05) to get a softer feel.
Overall I only draw "single" lines and don't add any dynamics (broader strokes) to the outlines just yet. The only reason for this is that when you add broader parts to the lines, the marker can pick up the colour and you'll end up with smudgy black or sepia in the applied colour... and you'll be furious.
When you are finished with the outlines, you erase the pencil and make sure you get everything. You won't be able to remove pencil lines once colour is on them.