Thanks Edgar...
allanx
Here's another NPR I've been doodling lately, different style from my previous works...
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Yes John, I thought your referring about the black and white convertion...
About the watercolor, I have a tutorial at the Sketchup Books section please check it out...
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My newest NPR render a clubhouse scene, it's actually a sketchup only render that I convert into watercolor style...
Thanks,
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That's is great John keep doing it and surprise us with your renders...
Thanks Richard, when I hear that word " Master " I feel like I have powers or something
but seriously I just like doing it, honestly I don't like this render , I did all sort of techniques just to make it work and you liked it...maybe my tastes if off this days 
Pilou, I think John is referring to my tutorial? If your interested it's at the SketchUp Books section (shameless plug sorry)
Thank you everyone,
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Peter, there's a few of those FLW drawings in the web and I plan on copying the style with colored paper, I'm very happy that your enjoying my tutorial. 
John, I'm happy that you like my workflow and use it for your projects, yes it's very simple but very effective for real projects... 
allanx
Thank you for those who viewed my work, here is the Final image for the project...
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A practice render of very old modeling project, Digital Watercolour style and planning on doing a Sketch version of this...
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Thanks Peter, anything is possible I'm just having fun trying out different style...I think I will give it a try and see how it looks...
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A quick sketch of the Robie House by Frank Loyd Wright...
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Thanks Edgar,
This image is a combination of Sketchup, Maxwell Render, Photoshop and Fotosketcher...
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Here's a new one with the same sketch style rendering....
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Nice combination of colors and materials Fred, I love it!
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I made a render of this before but quite not get what I want from the result , so I did a Sketch version and here is it...
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Thanks Daniel, the project's name is 6622 Norway I've just added the house...6622 Norway is the street where the house is constructed...
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Thanks Carloh, there are alot in Sketchupartist.org which are from Jim Leggitt.
Link: http://www.sketchupartists.org/tutorials/sketchup-and-traditional-drawing/
Dennis Technique: http://pages.uoregon.edu/graphics/resources/sketchup/downloads/TheDennisTechnique.pdf
But if you are referring to Grant Marshall's tutorial I'm afraid that tutorial is not available anymore...
allanx