Long time, huh?
Here is a tiny SFW (kinda) sample:
The body of the daughter, Elly, is pretty compared to the mother. She is shorter but bulkier. Instead big breasts I chose a "natural" approach, like a bodybuilder.Basicly she is a cute incredible Hulk.
I want their bodies to be pretty different because they will "attack" the guy together on the third issue. This way will make easier to you know who is doing what.