Brethern im trying to paint (self) portraits but when they dont look like me or the person im trying to portray I have the feeling I simply have nothing to show for in the end. It makes me a bit anxious to ask people to pose because I cant deliver but at the same time I know I need to improve. When i paint myself it looks decent in the sketching stages but when I try to proceed the subtle tonal changes and other details fuck me up. Wat do?