How Leonardo da Vinci made his underpaintings - part 2

Part 2 ,of a video tutorial ,describing how Leonardo da Vinci used a reduced palette ,for giving form and a strong base to his wonderful paintings.
The starting point was Leonardo's Treatise on painting ,the paragraph describing how to paint a face on a canvas.
Stopping By the Inn by Twin Musicom is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...

Source: http://www.twinmusicom.org/song/298/s...

Artist: http://www.twinmusicom.org

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Journey in the New World by Twin Musicom is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...

Source: http://www.twinmusicom.org/song/258/j...

Artist: http://www.twinmusicom.org

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Master of the Feast by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...

Source: http://incompetech.com/music/royalty-...

Artist: http://incompetech.com/

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Renaissance by Audionautix is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...

Artist: http://audionautix.com/