You noticed the closer little boy in dungarees first didn't you, not the cool dead tree ? well there's a reason for that!
Okay! so the theory of "The rule of Thirds" is that if you place points of interest in the intersections or along the lines your frame becomes more balanced and will enable a viewer to "interact with it more naturally." Really, it just means that if you split your frame or picture into 3 horizontal lines and 3 vertical lines, the lines that cross over is where our eyes will be drawn to on a picture, so it makes sense to place the important parts there, right?
It's common mistake to place something in the center of a picture as that's where you would expect the important part to be, but alas our eyes are only drawn to the center of a page if you use a "dead space" technique.
Continuity
Whilst most continuity errors are subtle, such as changes in the level of drink in a character's glass or the length of a cigarette, others can be more noticeable, such as sudden drastic changes in appearance of a character. Such errors in continuity can ruin the illusion of realism and affect suspension of disbelief.
In cinema, special attention must be paid to continuity because films are rarely shot in the order in which they are presented. Weather, the ambiance of natural light, cast and crew availability, or any number of other circumstances can also influence a shooting schedule this is why in film people are hired specifically to remember positions and such of things to prevent continuity errors.
An example:
An example:
Here's some video footage of some continuity errors in harry potter for a better example of what i'm talking about
