Them Favourites Proportions

Hello guys^^

Well, I continue practicing everything I can and need to improve my drawings and I came up with a quick idea: I drew some of my favourite ponies with their own proportions, how I imagine them^^ I also included my 3 favourite shippings, hehe^^ 
From left to right:
Lyra: I imagine her to be a bit bigger and also chubbier than the others in this piece. I have to confess, she turned out too big, but well, it´s a bit of practice xD
BonBon: She´s smaller than her sweet Lyra, but she also isn´t the skinniest one. A bit of chub is on her, as well.
Vinyl: She´s the big, hip DJ for me^^ She is thin and a bit smaller than Lyra. I actually haven´t got much to say about her xD
Spitfire: I guess most of you agree with me when I say that she is skinny, sporty and muscoulous here and there. Honestly, I still have some problems drawing muscles, but you can see it a bit better compared to Lyra´s body xD Meh
Rainbow: She´s similar to Spitfire, but a bit taller anyways.
Octavia: She is one of the smaller ones, I imagine. Daintily, elegant, she´s a beauty^^

What do you think? Let me know in the comments^^ I hope, you like them