@GoldDay, these images are both good, but please remember that every cut must have a collar. At the same time, however, the ideal cut only contains 2-3 pixels beneath the chin. 

Since in some sources, like presumably these two, the person in the image may have a longer neck than usual or the collar is lower down, this would be quite difficult to achieve naturally. Here's a technique of how this can be accomplished quite easily 😉

 This is not optional or down to personal preference but what we're looking for in all our cuts. I'll fix these ones myself, but it's something to keep in mind for the future 👍