Promises

I think that this cosplay is very well put together. Everything is included from the necklace, to the arm bandage and everything is very accurate. The pose portrays the character of Serah Farron extremely well as it implies a shy girl with very personal aspirations and a dreamy nature. The expression is also wonderful, very relaxed and happy, an expression which you can see Serah using when posing for a photograph. The wig used in this cosplay is a great colour, too. All materials used are perfect for the costume and everything looks top-notch!

The photo itself has a gorgeous soft lighting, giving a calm atmosphere which is perfect for the cosplayer. The background colour also fits the overall colour scheme perfectly.

I only have two constructive points to make about this piece. Firstly, it's hard to tell but it seems that the eyebrows are a lot darker than the wig colour, which harden's Serah's face up a little bit. My apologies if you did colour your eyebrows pink and I am just blind, but perhaps a sliiightly lighter tone would help even more with the softness of Serah's face (although this is already pulled off to an incredible extent).
Lastly, I'm not sure why this is but it appears that the picture has quite a pixellated effect to it (especially around the left part of the face), perhaps due to some post-photo editing? Nevertheless, it isn't too bad but I would watch out for that in the future as it somewhat makes it uneasy to focus your eyes on that area.