It's a great pose and the thought you put into her clothing choices really shows! The mood fits her perfectly. Also, I think this is my favourite anthro Pinkie; it makes her cheerful and quirky, as well as fashionable, though does not obsess over candy issues, rather focussing on her Surprise-like characteristcics.
I think they mean you have put the wrong description to the picture. This is clearly the original, but you wrote "Now with clothing! Pinkie by far had to be the hardest to clothe. Being upside down a skirt wouldn't have worked too well, and I didn't wanna mess up her tail. Hope you like."