Aegy, on the "rule of constrasts" page you say: "...if the contrast is strong it will works. And you've caught the viewer's attention without he didn't notice anything."

In English, at least American English, this will be better understood as: ..if the contrast is stong it will work(singlular word).  ..caught the viewer's attention without him noticing anything.

You did ask for possible language corrections.  I know we align words differently for the same  meaning.  The meaning is clear in your version but what I have said is more accurate to English.

In truth, your tut is already very helpful and well done.   Tom.