hi
okay in the first chapter, maybe try to address an aspect that is in your introduction?? like elaborate on what your topic is really about, and remember to support it with primary and secondary research. try to split up what is in your introduction (your aims for the PIP) into sub groups/ subtopics that will help you get to this conclusion, or lead you on the path to it.
and really just start writting, thats the best advice. once you start writting, it usually flows, and it dosent have to be perfect yet.
so yeah. i hope that helped a little bit, sorry if it didnt
good luck!