Ladies and gentlemen, (I think) we got it. It was somehow easier for me to draw them sitting and create size difference from here. I think I might have given Tulla too long front legs, but Imma watch out from now on.
I think I made them girls proper round, chunky and actually Fluffy. Marcelline’s teats are small by design (she wasn’t well gifted in miwky pwaces) and them girls’ pussies are located closer to their anuses, so they normally are sitting on their labia when sitting down like that. I didn’t put any teats on Thumbellina - I didn’t want to muddle the sketch so tiny.
My idea for size difference guide:
[height in standing position, measured from top of the head to the ground; adult specimen]
Standard Fluffies are no bigger than a regular (mixed) house cat with males being a tiddly bit higher
XXL Fluffies are about as big as a German Shepherd dog
Micro Fluffies would be around the size of a 3 weeks old kitten
Shoutouts to
@yellowcottoncandy030 for designing Thumbellina
@PonePone for the writing on XXL Fuckffies
@NekuChan for the original Fuckffies idea
@ you all for tryna help a frickin n00b 
