hello buddy, you will have to hand in a draft on day one so need to think what you are going to do. If there is anyone at your unit who has recently done IMLC have a look at their WBA, it will give you a good understanding.
It does not have to be relevant to your job, could be getting a bike stand made up to stop all the bikes being left against walls. Moving office into a larger one etc etc.
It is all about the content, keep it simple and explain any military abbreviations as its marked by a civilian. Good luck.