cool i like your drawings. it look so really. hope to see more drawings from u on other actors amd actresses.
a really easy way to draw these 'hard parts' u consider is to turn the drawing completely upside down and draw it that way without thinking about it as a body part but rather as a shape. coz that way ur mind dont conflict between the right and left brain mode. coz on left brain mode u keep saying its a nose its the mouth etc and saying its not right or i cant draw it... but if u do it the way i said u will slowly switch to right brain mode and u will perceive the nose mouth and other parts as shapes rather than facial features.