When attaching the film I have learned that one the-counter to the instruction-better by applying 'bottom up' (ie start at the Home button). You start namely from the top, then you have to work very precisely (or lucky), so that the Home button fits exactly in the slot provided. Because unlike the iPhone is the Home button shows the fire phone, which leads quickly that you have to start again.
In addition, the attachment is device related serious than other smartphones. This is again because that fire phone which has four cameras in the corners.
But it is quite feasible, if one takes his time and stays calm.
As a final tip: if you're not sure whether you may take the hinbekommt- rather the three-pack!