wallpaper

Never work from two ends towards the middle !

I assume that when you say "middle of the wall," you mean where the edges of two rolls of paper meet.

Here are some excerpts from:

http://www.wallpaperdirect.co.uk/how-to-hang-wallpaper.php

Ensure the pattern is the right way up and never assume that the outside end of the roll is the top - it is not always so! Mark the back of the paper with a 'T' at the top, this avoids confusion later on.

Consider where you will start hanging. For boldly patterned wallpapers choose a focal point such as a chimney breast or the dominant wall and plan to hang from the centre (see fig. 4). If you have a plainer design start in a corner, usually behind the door (see fig. 7).

With a bold design, always cut the first length so that when it is hung and finally trimmed top and bottom there will be a complete motif at the top of the wall (see fig. 5)

Before cutting the next lengths ensure that the pattern matches up with previous ones. Remember that you will be using more wallcoverings if the design is large or has a big repeat.


Here's a video that demonstrates similar tips from that website:

The largest mistake that both homeowners and designers make is, over complicating a design. They tend to lack experience in bringing textures and colors together is a cohesive, meaningful and pleasing way.

Keep it simple as possible, unless you are trying to achieve a dramatic focal point. This is usually done for art, important things you want to be noticed immediately or in commercial design where branding is important.

In most cases the design transitions should be subtle and should cater to an overall emotion. That said, make sure your patterns, textures and colors do not over power one another, or become too complexed so that it ends up creating a feeling of confusion and stress in the room. Most often, a simple and subtle ceiling is more than enough. Of course, that also depends on whether you have intricate ceiling design or trying to achieve something out of the norm.

Taking all the prior things I’ve already mentioned into consideration, you should be ready to start with looking at simple changes; things like wooden trim, changing the lighting, adding the right crown molding and so on. Start with the very basics and keep it simple. You want to compliment what already exists, not detract from it. Often, less is more. Keep this in mind.

1. Begin by using the same pattern on both sides of the wall. This will make it easier to match up the pattern in the middle.

2. Make sure that you have enough extra material when cutting the pattern pieces to ensure that the pieces will fit together properly.

3. When cutting the pieces, mark the center of each piece with a pencil or marker so that you can easily line them up in the middle of the wall.

4. Use a level to make sure that the pieces are straight and even.

5. Use a thin bead of caulk or silicone to fill any gaps between the pieces and to help them stay in place.

6. Once the pieces are installed, use a damp cloth to wipe away any excess caulk or silicone.

7. Finish by adding a sealer or topcoat to protect the pattern and prevent it from fading or becoming discolored.