iphone 7 screen repair ??

[tumble220]

I've repaired many 5, 5S, 6 and 6S iphone screens, but now i've been asked to repair a friends iphone 7 and am a bit nervous. Mainly because of the price if it goes wrong. I have the ability and watched video's but still a bit wary. It looks pretty much similar to the other iphones. I have also read about the home button will have to be calibrated by Apple, not sure if this is always the case and is it easy to damage?. Any one changed one that could give me advice?. Many thanks, Gary.