Hello again... First major question was hinted and partially answered by the light w/ sketch part of he lesson. But it may need (imho) deeper examples maybe. I mean what i am talking about is effect of lights (spots or infinite) regarding toon (/w line sor not) mode. It may behave a bit like in sketch, ney ?If there are specific rules and behaviors regarding toon mode, can you add something about it ? it is now broadly used these day by people with animedoll, yuka, or any one interested in ztoon, or any technics to make manga or anime related pictures... SO i guess it desserve inner insights. I saw toon aimed ligthsets that used a whie keylight, and two dark grey/near black fill or back spotlights. This lead me to my second question: how can dark/black lights have any effect (visible ones i mean), black light isn't very bright, but it seems it still affect the fender, especially the shade parts or highlights in toon mode. Also, regarding any render (photorealistic, or anything) what kind of colors can give best effects or improve/emphatize skin textures ? So second question is about recommended colors or hints/tip at color choice for spotlights, regarding situation... (if any rules can be figured out) third question was about a python script or a parenting prop (a cone in fact) that could act as a guide to "simulate" the real light cone of a spotlight. After all, geep made us the spotlight prop itself, so why not trying to make also a lightcone prop ? if possible. that leads to my fourth question: are there any means aside postwork (or at least to help/prepare postwork) to MAKE visible or simulate the view/sight of a light. Mean visible trails of the light cone, as in a stage, or a flashlight etc, and also how to simulate the presence of a lightsource in a scene. Lets say you render a bedroom, with a bedtable with a lamp and light bulb on top of that. For shadow sake and illumination of the character and furnitures, you need that some poser lights does come FROM the light bulb, but a light bul radiate all around at 360 angle, or in fact in 3d, not on a plane. So how/what ? is this possible ? well i may even forget the other questions by now, i think theses are already enough for our poor exhausted doc, i am already enough a pain like that with my curiosity killing the cat ! Ps: hiya sandmarine, glad to see you here !