@ Blood Red Rain
I don't think this last photo you posted would qualify as a dutch tilt. It has diagonal lines from how the bodies are composed, but there is no apparent tilt of the scenery, to the left or to the right. The camera was tilted to look down at the ground without it being directly pointing downward, so it is tilted, but it is not a Dutch Tilt.
Look at some examples in this forum, and/or try google images.
Here is another example of a Dutch Tilt from my gallery here at Cosplay.com:
Notice the diagonal lines in the scenery, tilting from left to right and right to left.