First time I've ever done something like this for someone. This took longer than I thought due to work, software issues for when it comes to calibrating my tablet, and a bit of misunderstandings for how this character's supposed to look.

I had fun making this since it was something different than I normally do for people. However, I don't think I'll be accepting anything similar to this for quite some time since I'm pretty strict for what it is that I accept for commissions for now (I broke a rule for how many elements on a piece I accept. I'm only supposed to do 1 element on 1 piece only. Ended up having 10 elements on 1 piece with this one. I will let this slide, though).

This ref sheet was originally going to contain more transformation-related pics and text containing the transformation info. But due to how much room I had on the sheet, and how I already broke one of my commission rules is what made me have just the face and paw formations shown (And the one who commissioned this requested more of face and paw related stuff, anyway).
Here's the complete information on this character's transformation, commissioned by  kooncds:

Sources of Krissy's transformation include drugs (One of her most favourite being heroin), anger, lust, the full moon, alcohol, musk, and pain.

TF Stage 1:
- hyperventilation, along with an adrenaline rush
- sweat production increases dramatically, and pheromones grow wolf-like (Overall odour shifts from human to canine).
- veins become varicose
- eye colour changes
- bleeding of the gums and nails, only to have teeth and nails replaced with fangs, talons, and claws that jut out due to supporting structures remaining too small
- spine pops up, with the end lengthening to form a bit of a tail
- body hair thickens and some fur forms on some areas of the body
- swelling and disfiguring of the palms of hands and balls of feet
- stretching of the ears and feet
- genitalia swells, canine-like male genitals form in addition to normal female genitalia
- small muzzle formation, slight deepening of the voice, and excess salivation
- overall feeling in this stage is painful with a hint of euphoria
- verbal speech becomes vulgar

TF Stage 2:
- overall body, tongue, genitals, and muscle mass increase in size with some disfigurement
- more fur formation and hair thickening
- hair style becomes increasingly wild, more mane-like
- fangs, talons, muzzle, feet, tail, and claws lengthen more
- voice deepens more and becomes animalistic, making it difficult to verbally communicate
- palms of hands and balls of feet swell up more, followed by a darker complexion change (Along with the lips, nose, and parts of the eyes)
- big toes remain same size but have shifted up more (Same can be said for thumbs for giant alternate form)
- pain lessens but feeling of euphoria remains

TF Stage 3:
- all features listed above have grown, formed, and lengthened to their complete shape
- voice heavily deepened and more monstrous-sounding, unable to speak in human tongue
- feeling of euphoria replaced with feeling of omnipotence

Uncensored version -> http://www.furaffinity.net/view/27139753/
Done on Sai with an Intuos Medium Pro tablet.
Krissy belongs to kooncds