Why didn't I write a critique on this before? The FFF is wrong with me!? How dare I think a simple comment is enough!!!??!?! Bronyness cries out in injustice!!!
Well here goes. Ahem
So. Freaking. Adorable. Once more your style does great justice to the world of OCs. The shading and gradients add a lot of life and... arrugh, whats the word... perspective? Dimension! That's it. Adds a lot of dimension to the pegasus. For some reason, the left forearm looks slightly awkward, but now that I look at it more closely, that may be a small portion of the left wing instead.
The body, head, just about everything seems proportionally correct. From hoof to head. Also love the small collar with the initials on it. The mane and ears in particular stand out particularly spectacular. Awesomeness, and 20% cooler just isn't enough.
I'm not 100% sure what the words are "pertaining" to, but the only thing I could possibly suggest adding is a slight blush. But again, I don't know exactly what the words hint at, and can't judge whether the blush would be appropriate or not. Although it would be even cuter -- then again there's diabetes cutness overload to consider...