The painting is called American gothic, it was painted by grant wood. I'm not sure what the methodology was sorry.
Nothing. They don't celebrate Christmas the same as us :)
Answer:
A vantage point is used in linear perspective as a stationary point from which a viewer is related to the object/figure being rendered. It can be thought of as the point of reference from which all things in the artwork can be related to. The vantage point may be very high or very low. High = bird's-eye-view.
