Thriller conventions

Though my questionnaire was based on horror films I have decided to form my idea around a thriller. After going through my idea I felt that though it had horror traits the main feature of my opening is that of mystery and tension.  After deciding I was going to do a thriller I completed research into the typical conventions of a thriller which gives its distinct genre. 
Commonly I came across a correlation in thriller films containing a protagonist and a villain with plenty of suspense. Famous thrillers like Psycho and Inception all follow similar traits though are based around opposing story lines. Commonly the film has a growth over the time with suspense and suspicion. Little is usually disclosed until late on and therefore it uses much of the audiences own imagination. Usually I also found it is mainly from the one person’s point of view, showing the journey they are on and the obstacles they face. However other points of view are sometimes included and through these shots the audience sometimes feel sympathy. Action and movement is often a common trait in such films creating scenarios which leave people guessing (and usually wrongly) this, I believe, is the most loved aspect of thrillers which distinguishes it from other genres. Suspense builds with the growth of the film as more, is commonly, slowly revealed. The films usually act as a puzzle and as the film progresses more puzzle pieces are added creating a bigger picture. As thrillers progresses more is revealed yet the underlining story still lays partially dormant. Normally the motive of the acts committed throughout being revealed at the end.
The main protagonist in thrillers is commonly a male who is accustom to danger by their job or lifestyle (like for example James Bond) or typical citizens whom have been dragged unintentionally into situations. They usually aim to represent a particular group of people or a belief for example in 'Cabin in the woods' the group of teens.Their role is usually to overcome the evil and come to a resolution. The villain is also commonly a male generally tall and largely built with a very shadowed identity making them very mysterious.  Villains are usually disturbed by something that has occurred within their life or feel they have control over something. 
other characters may exist within the storyline however through situations like betrayal, disruption and fatality the focus is pulled back to the main characters. Females are apparent in thriller film but stereotypically take on characterises like innocence and helplessness- commonly falling into the role of the victim. The type of thriller typically sets there appearance. In so they either wear little, like in slasher-thrillers (Like Texas chainsaw massacre) or contrasting this a lot more like in period thrillers (such as 'The Prestige'). Through the costumes there is also much revealed like personality with as villains and mysterious characters usually wearing dark colour like black (for example Venom in Spiderman), whereas the protagonist wearing poignant colour like white (for example in Hard candy).