Thank you guys
@Gault - there is no a secret or the "how to"...
except a great devotion to something you like to do,
a big number of continnual tries and fails and successes...
and finnally a precise customising of the optimisation
All my animation was not of a such high quality...
But I had made a long way from there...

NOTE/EDIT : have a look at the high granulation here... not such a good optimised one... heh
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And an another thing... Please kindly TAKE a PATIENCE and
check those two pictures...
Are they looking the same?

Yeeeeah... ?

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Yeah... they do... but the second one is a bit boosted...
There is 58 Picture frames in my Animation
The First animation was finnished... BUT then I had modified it and found it BETTER!
So I boost SEPARATELLY, ... EACH ONE ,... ONE BY ONE, all of the 58
When you will be ready to do something like that - your animations will be as good as mines