Nice studies, @quizzy! Overall, great job, especially with the one from imagination! My least favorite of this group is the third one, and I believe it’s because the values on the face are too close to the values on the hair. Also, I feel like all the forms look a bit too flat - maybe the reference you used had a flattening, “magazine-cover-style” lighting? You asked about bounce lights - the main principle is that, in terms of value, bounce light is on the “shadow range”, so it should never compete with the main light, it should always be darker. There’s a lot more stuff going on about bounce lights if we consider color, so, rather than attempting to explain anything, I’d better suggest some of the best study resources I know on this: . Dorian Iten’s The Shading Course – Fundamentals of Realism, Light & Shadow . “Fundamentals of lighting” with Sam Nielson, on Schoolism - https://schoolism.com/courses/art/fundamentals-of-lighting-sam-nielson . CtrlPaint’s Photoshop rendering series (best if you’re interested in digital, but also contains the same principles applied to traditional media): https://ctrlpaint.myshopify.com/collections/foundation-skills Hope this helps! Keep it up!