If those are just one-hour dealios then a daylong effort must be stunning...
These incorporate a lot of stuff that's tricky to get just right... the expressions, the masses, the lighting/shading, the delicious ambiguity---Faye looks like she's about to rip your head off or crack a joke, or both--Dora looks like she needs something, but can't quite figure out what it is, and she might just break down if she doesn't get it.
Dunno if you intended any of that, but I'm picking it up. Color(charcoal) me very impressed.