I can really see that there was allot of time put forth into this amazing art piece. Zecora, being one my favorite characters, looks very pretty in this one. Now to the questions:
Vision: I can see that your giving Zecora that look from some sort of chic magazine. With the awesome effects and coloring it makes her look a model. Nicely done!
Originality: The use of Zecora's shadow in this picture is really well done and something I don't usually see done before. The background is also a nice touch.
Technique: The effects from the background and the shadow really stand out and give her a sort of "shine" to herself. The colors and shadowing are amazingly well done and the eyes just catch my attention immediately.
Impact: This is a very well done MLP;FiM art piece. You were able to change Zecora's usual plain look into a very colorful and amazing look.
Overall: This is an awesome piece of art! I would really like to see more form you in the future!
THIS IS TRULY AMAZING <3 The eyes look So kind. The Color Sheme is Verry nice and it workes Verry well with the picture. :3 I Also Really like the shading on the Gold items. But Honestly, I'm in love with the way you made the Eyes ^w^ *They are just So Stunning.* The Blushing Makes her Look Evan more Cute >w< Green Coloring On the Background WAS PERFECT For this picture! The Hair is Perfectly Detaild with the head and back. The Cutie Mark Is Verry Fitting and In a way, so Perfect, and making the picture the best it can be! Thank you for sharing this Amazing picture with us on DeviantART <3
Sorry - I was thinking of putting a critique, but being a lyman in the art of drawing, I generally concentrate of feelings and, in most cases, portraits lose me in that regard. But, despite not putting up a critique, I will not deny that it is a very nicely done piece - Zecora looks cute (filly-ish even) and while the background is rather simple, it plays nicely with the general concept. Kudos.