Fixing breast shading

Even though the breast shading is correct, they don't look nice.

The idea here is to partially edit the breast area to make the shading rounder without increasing the size of the breasts.

select the breast in edit mode

If you plan to use subdiv modifier with the mesh, remember to activate "Use Custom Normals". Else your edit will not be visible and you might hate yourself afterward. Please be kind to yourselves.

click Abnormal, and the vertices will be pre-selected

click Sphereize Normal

position the center empty by pressing G and moving your mouse

make sure the position of the center is creating this lower shading

Confirm the change

Now you have a rounder pair of breasts without making them too large

This can use this same method on buttocks, male chest, abs etc.