>>9021134
reference reference reference
Of course knowing how volumes work is essential. Tits take up space, so you need to know how to draw things taking up space!
find tits you like, try and copy them, the more angles to refer to the better! Try and find a balance between real life and art you think does boobs well
Draw them naked, draw them with a bra on, take note of how they're different.
find pics of tits progressively filling up with milk, they're out there! note how the breast changes as time goes. take the bits you like about it and apply it to your drawn tits.
find tits in a shirt! a tight shirt! A wet shirt! take notes on how boobs react to their surroundings.
And don't be afraid to ask for pointers!