OK, I couldn't read much more on this thread without trying it, and in particular, skygod challenging "the rules" since I am not a big fan of rules in general. I just went in my Italy pics to mess with this so you get an Italian theme
Here are my first attempts within the rules:
Here is from significantly below:
Here is ground level:
I found ground level VERY difficult and this one is a cheat in the sense that I opted out of the "tilt shift line" of focus because I found any subject with any kind of distance between subjects at eye level just doesn't look right. Like it is OK at first glance, but if you look at it, it looks wrong. Not sure if that makes sense. Of course, it is not like any of these look "right" anyway
In the second one I keep waiting for a black Aston Martin to appear followed by some Alpha Romeos and a Landrover....