Start with the evidence
Start with the agreed deliverable, its scope and the relevant service period. Separate the description of the work from an internal project nickname that the recipient may never have seen.
Work through the example
Two discovery workshops at USD400 each give a line amount of USD800 before any other applicable items. “Consulting” alone hides the quantity and makes the amount harder to check against the agreement.
Make the next step clear
Read the description as someone outside your team would. Remove unexplained shorthand, keep a link to the scope and ask the project owner about changes. Do not add work merely because a template contains an extra line.
Keep the source context
Treat an invoice draft as a description of an agreed business event. Keep the source agreement nearby and distinguish document preparation from approval, sending and receiving payment. These are separate steps even when they happen close together.