Each door was treated as a whole but also as three different paintings nicely framed and separated from the rest by the moldings. I think that even the small skiny panels have their own identity. This really is what I found exciting. When I look at a painting I like focusing on details and in this case the structure of the doors was allowing me to recreate this style of vision.
I worked from Leornardo's drawings .
I drew with charcoal on basecoated paper and sealed it with acrlylic glaze that I watered down and sprayed over.
Being ambidextrous I can write backwards with my left hand which helped me copying Leonardo's famous handwriting...