Thanks Chris and Eric,
I should admit that cold fingers and wet eyes are behind the very tight border at the bottom of the left tree. I posted anyhow because after a while I felt that this exception to the rules was adding some positive tension to the composition.
The whites at the bottom right are not blown out, but certainly quite close. Deliberately I reduced contrast and clarity over most of the ‘background’ regions to make the trees stand out as much as possible.