I am papering a hallway landing and stairwell I have plumb lined measured (twice cut once) but as I have gone around an exterior corner its all gone to pot. The paper is 3 year old Laura Ashley bamboo its been a nightmare to match in the corners (impossible really) and now its about 5/6 mil out at the bottom. I have another exterior corner to do before I am on the main wall there is only a limited amount of the paper left any suggestions on how I can get rid of the wonk in the wall paper anyone free in the Shropshire area to come and have a look willing to pay for this job to be finished as it a mare