OH Fun!
Tire ID should be on the DS and centered on the valve for ease of finding the valve (tubulars don't have an option). If you have colored spokes then the spokes adjacent to the valve should be a contrasting color.
P1030014 on Flickr
Crank position should be with the DS pedal down and the cranks aligned with the ST.
P1030584 on Flickr
We have not discussed where the chain should be! Large ring, middle sprocket, single sprocket bikes excepted!
P1030591 on Flickr
One of the reasons I take so many pictures is that I forget about the "settings!" The order of improvement is cranks, valve stem and now working on the drive train.
Another issues is camera location. I am liking the camera to be in the plane of the top of the tires. Gives you that golden section kinda vibe.