Not really a question more of a comment (although there is a small question!)

I've just finished the course and it's really been awesome! I've learnt a ridiculous amount and wanted to say thanks! :D

The bonus video is actually really useful and has turned what looked like a smooth, almost factory-default, apocalyptic model into something that actually is apocalyptic. Definitely would like to see the bonus videos in future modelling courses.

I've never used the multi-resolution modifier for sculpting dents before. When I sculpt a dent it is mirroring onto the other side, I imagine we have to apply the mirror modifier first before we sculpt? Otherwise it might look a bit odd! - Or is there a way of stopping it go across the mirror?