Okay, here it is:
You mentioned you needed an idea for where tits could pop out. What comes to mind is a sleeveless top that drags in between them so they pop out to the sides (a bit like the upper part of a swimsuit shapewise) or boobs popping out upwards cause their too big and everything else is just fine (this might be a potion-effect).
As implements I see the rod of the broom as possibility, a paddle made of tree bark or simply a thick twig who is more like a cane.
Also I am a sucker for freckles, braids and unique hair colors so why not give the next one turquois toned hair in braid like strands? Position could be floating in midair, legs lifted high.
Oh...those potion bottles could also be used different, emptied they might work as suckers on nipples or the pleasure button if your up for that

All I share are ideas, you may use them or not. I'm glad their out of my head for now ^-^