procrastination is a sign that you are feeling lost and overwelmed by the task of it.
first step. make a plan.
set the egg timer to 15minutes, and write freely about what you need to write in your report. write without thinking about grammer, spelling or structure.
once you have done that. go back and read what you have written and with a highlighter highlight things that you can elaborate.
your first task is to write messy. sit down and dont think to write perfectly.
visit these websites to get you started:
http://davidmaister.com/blog/18/Done-at-Last-Thoughts-on-Procrastination
https://webspace.utexas.edu/cherwitz/www/ie/b_flowers.html
your first step would be is to: write a ZERO draft of your report. then once you've done that, then go back to it and improve on it.
DO not attempt to write perfectly the first time. that will just overwelm you.