this is simulated from a background for alaa eldin .. what's your opinion ?

What do you mean by "simulated"?

i mean that i imported a ready made image and redraw it from the start .... what do u guys name that technique because Arabic forums name it simulation

If your drawing directly over top of an original picture we would call it "tracing".

Tracing is generally frowned on by artists (it's considered cheating) but I think when you are a beginner it's a good way to learn the tools and and develop your technique.

well , as u say this is a tracing but in my opinion tracing as a skill , some artists can't trace organic things so they are not skillful in tracing
and i think it's one of the measures of artists skills