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I'm also doing Dutch. I based my militia on the marines/soldiers in the recent movie about de Ruyter, who wear green coats. I've no idea what they based their research on ... but it is good enough for me! I also loosely based my two commander figures on Rembrandt's famous painting, The Night Watch.
Below article shows Dutch Marines of the de Ruyter period. Look particularly at second plate:http://warsoflouisxiv.blogspot.com/2009/07/couple-of-interesting-dutch-marine.html
Two constructive critiques if I may: one, take the time when you have it to add the missing basic rigging because it rather stands out with those empty holes in the cleats (I think that is the term? especially because they don't 'match' hole for hole fore and aft) and, two, do a bit of dry brushing on the exterior of the hull to give it a more weathered look that will better match those lovely muted tones of the crew and the well-weathered deck. And you already know the sails could use that shading you mention once you have more time.