Couple of interesting ideas there.

I think a little 'darkening' of the FIRST shot we see of the asteroid slug's teeth in the distance (not shown above), where our heroes are in the foreground of the Falcon's cockpit....could work okay. If I remember right, the overall colouration and effect in that shot in general on the SE, looked a bit poor anyway. Having said that, I don't know what effect the Falcon's 'bright, white' lights (if they've been put on again) on the 2 front prongs would have. Just a thought, but if they are 'supposedly' on again at this point, would we see a hint of their 'shine' on any of the large teeth that they pass in the bottom shot?

I certainly think that as we get nearer the teeth, the 'lighting' in the shot shown here at the top looks fine, as the asteroid slug was very close to the opening of the asteroid 'cave' by this point, when the Falcon escapes, and whatever 'outside light source' that was hitting the asteroid's surface, was also entering the 'open mouth' a little at this point.

As far as 'retractable' teeth appearing, that's interesting too. However, if that is decided on, then I reckon it would be better not happening any later than during the shot at the top here. It would be a more subtle effect in the lead-up to when we get closer to them, that way.

I'd really like to see the strange colouring of the Falcon's cockpit frame made a little 'greyer' during these shots though, if possible.