I actually went and re-worked this illustration again, focusing on making the breasts a little more natural looking: flatter, wider, yet still full. I also re-adjusted and re-worked her areolas/nipples, and her shoulders too, adding slight indentations to where her Bra straps/pads would press on her skin and/or rub. She also gained a bit of Dialogue too, as well as, predictably, a few extra cup sizes because that's just what happens around here apparently...
There is a great skill to being a large busted woman - that is, to be able to walk or navigate without being able to see your feet! That might not sound like much as you walk around familiar territory, but imagine being somewhere you don't know, and having to look several steps (or in this young lady's case, feet/metres) ahead, and hope you've got your footing right when you get there! Trying to board an escalator could be an absolute nightmare - not that she could likely fit onto an escalator width-ways anyway, but you get the point. Imagine carrying a large box infront of you, all day; every set of steps or change in surface, and you've got to tentatively try and feel your way forward without tripping up. Then try doing that whilst contending with perhaps two or three-hundred pounds of jiggling, quivering, wobbling breast-flesh, seemingly with a mind of its own, and all of a sudden it makes you appreciate the enormous skill of any brave soul who can contend with a pair of super-size boobs!
Of course, if like our protagnist here, those breasts are still steadily growing, then that challenge just continues to be something to keep mastering. Much like completing a level in a computer game, only to find out there's a harder level still waiting to be beaten! Whilst as humans we often hate our differences, it is always refreshing to see someone embracing their uniqueness and accepting those challenges. After all, who wants to be just a 'Normy' anyway?
Having said that, if she continues to develop much more, she will soon have a job just lifting and balancing those enormous bosoms! Perhaps she could use a kind and helpful volunteer to help her navigate with those monster boobs?