No novice film, but ...

... If you messed up the first window did you know where your error documents.
The film unexpectedly forgives some mistakes, but she does not forgive if you try to process it alone. Since hats definitely some hands too little.
Already peel off the protective film plenty Spüliwasser between protector and silver foil to be sprayed. This facilitates removing the protective film, avoiding kinks.
What an absolute "must" is, is that they, as well as the window must be fed sprayed with Spüliwasser. The more the better ..
A real doctor is also essential. The supplied doctor joke is not usable and makes if you had him alone for frustration. But for the corners it is not bad. I had this one at that ordered:

with which the film can be super process if it is as I said tired wetted with washing up liquid, also on the outside of the film. This also explains the scratches described in other reviews can be avoided. Always there where I rakle the film must be wet.
Little Knicker which are not have been avoided in the very thin film when cutting non-critical and can be out doctoring.
The wisdom that I get rid come here from the experience of a failed window for total loss of the first film. But well, everyone could wenns would equal the learned fools, right?
The third window was already a large 1.5 x 1 m which was even foiled with two strips with super result. But as limited - process the second film strip until the next day when the adhesive of the first strip has attracted and the first strip can no longer slip.