Ok first off....this is not a defensive pose. Rather it's a power up pose...and if you check it out in the Goku vs Cell fight you can't miss it. Couldn't think of an attack to fit Fluttershy so I went power up. Yes, I gave her a super saiyan aura just cause it's been parodied so much in the fandom from the "he's a minotaur" scene.
Also someone was smart to spot out a little feature I'm doing....the physical appearance of all the ponies are different. Notice for instance Fluttershy is a little more lanky than the ones I've done so far, like Dash who more bulked up a little? Naturally just following what I see in the show....AJ and Dash are the stronger ponies out of the group....Rarity and Fluttershy are the least physical so I implement that a little in this. Nice eye.
NEXT! I will tackle Rarity. Oh and when I'm done with the mane 6...I will be doing more with the mane 6 and BG ponies. Why do something once...these are fun!
By the way I look forward to you doing Trixie!