Majestic, Extreme Detail, Picture Portrait, full body view, (Leonardo da Vinci:1.4), deep in thought, designing futuristic airplane, advanced technology, sketchbook, chalk, detailed plans, engineering concepts, curvilinear lines, monochromatic brown, green, black washes, sfumato technique, subtle gradations, aged parchment texture, historically accurate, anatomically correct, expert craftsmanship, oil on wood panel, golden ratio, rich, artisan, humanist, genius, renaissance inventions. by: Charles-Francois Daubigny, Miss Aniela
(Leonardo da  Vinci:1.4), designing futuristic airplane. 