To the installation instructions I suggest clarifying the caution in the “Requirements” section to only update the stock android ota to match the eOS version one is installing.
To the eOS version upgrade instructions I suggest an alteration to the command in the “Steps to Flash the Upgrade /e/OS ROM”, step number 7 to:
fastboot flash boot twrpimagename.img
More importantly the copy partitions instructions should be included here as well, as part of the process. This is exactly the situation where it may be needed most, where the phone may have android 10 one one slot and 11 on the other.