Finally, maybe insert a new step to cover prepping the battery after Step 6.
The View Huge version of picture is great!!! A diagram of how this fastener works would also be helpful for both disassembly and assembly.
I skipped these steps as well but because removing the battery can require some effort, I can see the need to include them. If there was a good way to attach the halves so they act as a single piece, that would be a good alternative to these steps.
If a simple diagram of the retaining clips and their locations on the device might be helpful.
There could be some reassembly notes/warnings. Special battery disposal notes should be added as well.