You're going to have a hard time with uv compression/poly compression when you try to make a small breast morph for her. The nipples will be very difficult to manage in that regard. A totally flat chested morph? Man, that's going to be difficult. The only other critical comment I have is that the cleavage seems too high or severe. The collar bones could use some definition. But I think I gave you the same critique a couple of years ago.

As far as proportions go? I was forced to sculpt and life draw in school... which is a necessary evil from my perspective. I imagine that you are going for a realistic figure so except for the implants I'd say she looks ok. I think her butt looks really good. :D... she's also cutely short so her head size looks spot on to me. The face can be fixed or changed easily. The topology looks good, or good enough IMO.

Caveat; most of my favorite artists don't adhere strictly to "rules". In general rules are something to be learned and modified knowingly in the pursuit of development of a personal style or vision. Hell, even in 3d and Poser in particular most of my favorite models don't even remotely qualify as adhering to strict rules, or even the constraints of "human". The toon figure I've been using and making stuff for has arms like a primate! That's why god created scaling, having ball joints also helps in my instance. Go with what pleases you, don't obsess too much over rules... or you'll get bogged down for another couple of years with an unfinished figure. I see it all the time. She's not the only figure you'll ever create I imagine? Finish her, have fun, move on. Or not?

Good work. Wouldn't mind making a Sylvia Saint head/fbm morph for her... ;)

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W10 Pro, HP Envy X360 Laptop, Intel Core i7-10510U, NVIDIA GeForce MX250, Intel UHD, 16 GB DDR4-2400 SDRAM, 1 TB PCIe NVMe M.2 SSD

Mudbox 2022, Adobe PS CC, Poser Pro 11.3, Blender 2.9, Wings3D 2.2.5

My Freestuff and Gallery at ShareCG