Good guide, I followed all the steps except for when it actually came to remove the battery strips and the battery itself. Those adhesive strips are a pain to take out and both of them snapped while I was attempting to remove them. I went off script and had to "delicately" pry the original battery out. The whole time I was afraid I was going to puncture the battery but if you are slow and methodical it can be done, my battery ended being bent considerably from me trying to extricate it.

Also, not an absolute requirement but I wish iFixit would include an extra set of adhesive strips for the replacement battery.