Arthur
The unsuccessful starting point was I think Game Colour Storm Blue, great colour but dried as shiny as a shiny thing

Mid coat was Model Colour Dark Prussian Blue and I topped it all off with Model Colour Prussian Blue. I did shade with a mix of the mid and Paynes Grey (I use artist watercolour from a tube) but it was as simple as that.
I did a sailor from the same release this morning by just using the two Prussian Blues (and the Paynes) and it came out fine.
Svennn