thanks a lot fot this great how_to - I have successfully repaired a broken front panel on an A1599 with the Fix-Kit (SKU: EU277001-12).
The only thing I noticed was as per step 55 after removing the home button - that also that ring probably needs to be removed and re-used as it was not existing on the new front panel (at least the one I bought here!) - with that it fits perfectly.
And maybe a general comment/critics/recommendation - I do not like in some cases at the end of those great instructions just saying:
To reassemble your device, follow these instructions in reverse order.
Because sometimes a few hints and tips how to re-glue parts or what are best practices to clean up and prepare parts before reassembling would be really great! That would certainly ensure not to screw it up or break any parts AND prevent buying spare parts twice!