Here’s most of what we’ve seen so far in chronological order: http://imgur.com/a/cKpEP
That seems pretty accurate based on the rumours and plot points we’ve gotten so far, although the last act is still somewhat hard to predict just based on a few short clips.
However this shot is not of Finn’s Tie Fighter crashing, it’s definitively a tree-line, most likely the same as we saw in the TV spot (see second image).
Could that shot go with the space shots of the red light on a planet? Perhaps this is all part of firing the Starkiller?
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That was more or less what I assumed, but isn’t Starkiller base the winter-planet iself? If so it can’t exactly shoot itself, so maybe there’s two snow-planets; one with the forest that we see Finn and Kylo duel on and the more barren one that we’ve seen actually split open to reveal the super-weapon. Either that, or this is a shot of the planet blowing up at the end of the film and the Falcon escaping the explosion (like in ROTJ).