Wallpapering a period home

Tackling the wallpapering in the lounge of this Grade 2 listed property, the first decision was where to start on the chimney breast. You tend to set out a centre line, and then you have the option, a) hang either side of the centre line, or b) place the middle of the first piece of paper down the centre line.

Judging by the symmetry of the clock and the stripe either side of the hearth, I think I got this one set out right!