@silentheart00 sure
For the first one, do you planning a stylized character? For me, it looks like she is a bit stretched in z-axis.
Rib cage space is the same as space from waist to groin, while the last one should be lesser. There is nearly one head length from belly button to both groin and nipple lines.
Arms are connected a bit wide, I think. Maybe this picture will make it clear about what I mean:

I can’t tell much more besides that (and what @malhomsi said) at this stage.
What sources are you using to supply your anatomy and proportions knowledge?