Here it is (above), "The Beast." How many actors have come to grief because they sought roles that fit their real personalities, rather than their potential cinematic ones? The truth is that The Beast doesn't care what roles you play or would like to play. It arbitrarily accepts you in some roles and not in others. Or maybe it doesn't accept you at all. It's scary!
As an example, here's me in a YouTube spoof on Match.com. Fast forward to the two minute mark where I play a seedy gigolo, turning around to face the camera. I play a lot of characters in this film, but that's the one that seems to come off the best. It's odd because in real life I'm the opposite of a seedy gigolo. I only discovered that I was passable at it because I tried a bunch of random things in front of the camera that day, and that was one of the few the camera would accept...that and an old lady, another unlikely pick. You could say that the camera decided what I'd do, not me.
In my opinion beginning film actors should film and photograph themselves constantly, then comb through the footage for what may be the few seconds that actually work. If the camera likes you, if only for a short time, then that's a clue as to what the camera will accept from you, and you can build on that.