This is a really cool idea but as a woman with large boobs I would know nipples are definitely not in the centre of your chest lol. Big boobs also aren't perky whatsoever, unless they're fake (which really sucks sometimes ahaha)
Delineate Your Lips kaderegi: Other reference. - How to draw lips correctly? The first thing to keep in mind is the shape of your lips: if they are thin or thick and if you have the M (or heart) pronounced or barely suggested.