Requesting her nipple and the outlines of her breast reproportioned so they follow the outline of the outside of her shirt more directly and her breasts are larger.
If it's unclear, just overlay this edit with the original and the parts of her shirt where her skin shows through. The edit followed those too directly and modeled the nipple off it, leaving her breasts smaller than they actually are under her shirt.
Don't completely redraw her nipple though, again mainly just redraw the contours of the breasts in proportion to it.
Original unedited for reference:
https://danbooru.donmai.us/posts/3118550 