@NahuelFK, not bad but keep in mind that every cut must have a collar. At the same time, the ideal cut only contains 2-3 pixels beneath the chin. Since in some sources, like presumably this one, the person in the image may have a longer neck than usual, this would be quite difficult to achieve naturally. 

Here's a video of how these two can be accomplished quickly and effectively even if the source doesn't seem to allow it:

There's also a bit of snow, which is to be avoided:

Have a look at the below video to see how you can easily spot and clean snow:

Ok, will take it into account for the next images. Thanks @mons!