I too, took the WNW challenge this month to paint pine cones. This was quite an unusual experience for me as I am in one of the worst ME/CFS relapses I have ever experienced.
It is 12"x16" transparent watercolor on Arches cold press.
You can visit my blog to read the details of how this painting was created.
I have found it wonderful to see each members pine cone creations. What a great challenge!