I'm sorry that I haven't posted in so long, but my university courses started and I don't have much time to get on the computer and scribble. As soon as I can, I will post something, but you are also invited to contribute any picture of creatures.
For now, I just have a butt-ugly scribble of Wynne's spirit.

Attention, spoiler - as you will most likely know, Wynne died at the attack of the Circle Tower and was revived by a benevolent spirit of the Fade inhabiting her body. As the spirit enhances her healing abilities, I think you could probably call it a spirit of Providence.
As for its looks, I had two things in mind. Firstly, I thought the spirit would approach Wynne looking like a thing of her past that she holds dear, that she cared for and maybe still does. As Wynne is mother to a son that was given to the Chantry, I figured it would be taking on the form of a headless templar - she never had the chance to even see her child, thus making it unlikely she knows how he looks like.
Secondly, a spirit that improves healing abilities most likely has the urge to guard the creatures around the body it inhabits and watch over his body at the same time. As such, the form of a knight is the one that suggests itself somehow.
I'll stop annoying you now with my boring explanations. There is probably a lot to criticize and I'll be very happy if you might have some constructive hints for me.