This is incredible! I loved seeing your process with applying your light sources so you had a life situation to look at to better understand how that would look in real life. I have never thought of doing this before, but I think I may try this next time it applies. Lighting is not always my strongest feature in my stylist approach to my work, but this is a great way to get better - especially for someone like me who still relies on physical representations to get good drawing results. Thanks for sharing your post is awesome - I like the gifs! It makes everything so much more fun to look at! :)