I am not a seasoned technician by ay stretch of the imagination, though I have tinkered with many things over the years. I followed the guide step by step, and took my sweet time. So far, the phone and all of it’s peripherals work like and look new, face recognition included. I highly recommend the iFixit Mako Driver kit for this project, but I suppose that as long as your tools are of a high quality, you won’t have many if any issues. I used a cheap low wattage heat gun, but after completing this project, I have drawn the conclusion that I really wish that I had the iOpener and am going it order soon. I also could have used a few high quality spudgers and prying/seperator tools. This was a great step by step guide, and I believe that a budding professional could likely take any advice that they can find on iFixit. Excellent work.