I always think its worth while to reflect on the requirements of a successful write up for internal assessment. Its easy to develop a fixed mindset that the write up is an artifical construct that has been developed by teachers in schools that appears strange and out of touch with what happens “in the real world”.
To address this issue watch the following video.
The key to a successful write up is to start with the understanding that its based upon scholarly protocol, that detail is a necessity for others to be able to verify your data and the conclusion you have drawn. With that approach, all else will follow in a natural and common sense way.