Answer: this is very informal language, conversational in tone. "I have to zoom in" is an action one makes with a camera and this ties in with the subject of the text, someone looking at a photograph of what was perhaps once a child, their child, ('...the little face I've known all my life...') who must now be grown up ('...covered in makeup....'). There is perhaps a hint of sadness - what was once a child is now an adult, and the last phrase, '...not where its supposed to be...' is very ambiguous. Where is the face supposed to be? With the person writing? Have they left home and sent a photograph to a parent, who now realises that their child is now grown up, will no longer need to have their face washed and rubbed with "Vaseline" in winter.
This is one long complex sentence, and the adding of clauses builds up a picture cumulatively of the parent's love for the child, and the distance between the then and now - zooming in is a powerful metaphor - and, perhaps, a sense of sadness that the child is gone replaced by an adult.
Step-by-step explanation: