I agree with everything Linda said (as usual!) and in particular, this part:
Quote:
My chief advice to you is to not work with any reference photo that is not perfect.
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If the eyes in the reference aren't the way you want them, don't paint from this photo.
Photographing people outdoors is easiest if they are backlighted (be sure to spot meter off the face with your camera) or in shade. Full sun is the toughest light for photographing people and I would recommend against doing it. Look at some professional photographers' sites -- there will be hardly and outdoor shots with full sun on the face.