The Secret to Drawing Well & more – Ep.13 Oil Painting Q&A with Mark Carder

If you have a question for me, post it in the comments below. I'll answer as many as I can in the next episode. Here are links to each question answered in this video:
00:05 — a lesson about drawing the three-dimensional world in two dimensions
07:48 — How did artists produce what you call "museum quality light" in the days before electricity?
09:32 — I'm a student at the University of Houston and the ventilation in our facilities does not allow for us to use regular oil paints, just water-mixable oils. Can I use the Geneva palette without ventilation, and if not, what are some colors from other manufacturers that are comparable to the Geneva colors?
11:05 — I like to do paint fine detail work and was wondering if I should make braced hardwood panels for their smooth surface, or should I stretch some fine tooth canvas?
12:42 — Can you talk about painting details? Like the peel of an orange? Do you use a small brush for that?
15:23 — In your video "How to Mix Colors with Oil Paint" you start with the darkest color and work your way up to the lightest color. In college my teachers told me to do the opposite. Can you elaborate on what you start with the darkest black first?
17:53 — Can I stain canvas for later use? Or is it better to just stain the one canvas I know I am going to use?