Centre Wallpaper

[k50smc]

I think I have a good notion on how to do this, but I'd like confirmation. I want to centre this patrened wallpaper on a feature wall. It is a straight match.
My idea is to double it back in itself, then fold in half and use the fold as the centre point. This is maybe not the best method, but would it work??

Thanks in advance

 

[Wayners]

Mark centre of the wall.
Measure from your preferred centre pattern to the left side of the paper. Lets say that's 234mm.
Mark 234mm left of wall centre.
5 marks down wall with plumb line.
Hang first drop to line.