@otowa Already better as proportions go!
As for the rear view mirror, I would make it a separate object ( as it would be in real life), then you can place it wherever you like without messing up other topology.
But time is an issue here, so: if it can’t be fixed, leave it. At least you’ll have learned a lot and do things differently next time!
Keep it up! Cars are very difficult and you’re doing really well.