Thoughts....

Had a stab at recreating Kieren's Emily colour test on this, (not so), cleaned up animatic panel of Edward in a very spider-man esque pose.
Have we noticed just how much the notion of flight is present in this story? Apart from the obvious; the title; name of the engine; and the presence of the falcon; we also have our heroes 'flying' from their old lives.
The above pose has Edward flying through the air, a pose also seen earlier in the film.
The Train 'flys' through a high mountainous region on a high elevated track.
In contrast, we've made our villain a heavy figure, not as suited to flight as our light, athletic heroes.
Just something to keep in mind as the development continuous.