I think the reason you didn't hear back from them is because you kinda draw the characters looking too... "little kid-like"
Don't take it the wrong way, these drawings are truly amazing! I mean, the movement and the detail and the facial expressions look so beautiful!
I just think, looking at it from Archie's point of view, you might want to draw them a little taller. Because these drawing of Bunnie remind me more of her old SatAM design.
But that's just my opinion