My face doesnt look as kent face! i got frustrated

Don't worry man, we're all in the same situation. I have to try things 10 times before I get a result I find decent. The truth is, it just takes a lot of practice and grit. Don't give up, just keep at it. At first I thought there was something missing in my knowledge, that I had to be told some key information and I would immediately get better, but it was just a lot practice, making mistakes and trying it all over again and slowly but surely your brain starts to get it. Because I already know what to do, but it's almost like my brain and hands need a moment to sync up. So just practice, practice practice, stumble and get back up again and again.

Thanks for updating the images EmadRj. Honestly it doesn't look bad at all...it's believably proportioned and well on it's way to being a great planes of the face result. The only note I'd give at this point is that the diagonal line from outside eye to chin is curved forward too much (red lines):

I'd straighten that contour to match the video example a bit better. You're only halfway through the planes of the face process too. I'm confident it will improve as you get through the third and fourth videos.