sfumato

 I was browsing and came across a technique used by leonardo da vinci called sfumato. This should be, or else some approach similar could be used in 'the last night drive' where I'm trying to place the model in the event.  Her edges are giving me problems

Technique

The technique is a fine shading meant to produce a soft transition between colours and tones, in order to achieve a more believable image. It is most often used by making subtle gradations that do not include lines or borders, from areas of light to areas of dark. The technique was used not only to give an elusive and illusionistic rendering of the human face, but also to create rich atmospheric effects. Leonardo da Vinci described the technique as blending colours, without the use of lines or borders "in the manner of smoke"

also, aeriel perspective.  Anbother technique another technique he used in the mona lisa. is the setting of the horizon.  In the mona lisa, he placed it at eye level, which adds to the provocative nature