This essentially means that you have to actually start ignoring the content of the episode in front of you and concentrate on the features of the anime characters in front of you. A good method may be by muting the voice and also freezing frames whenever you feel that you need to study the manga in detail.
You have to start by observing one feature at a time and then moving on to the body and the body language of each character. This means that you have to even go as far as to make notes on what you think is important. Do not think that this is something that you can master in one go. While we would be happy for you if you are able to do this so quickly, we would like to caution you that these drawings will need you to grasp all the nuances to make it look good.
Which anime manga character is your favorite? Why is it your favorite? Do tell us also about how to feel about the examples of amazing anime drawings and manga faces that we have given here.