use tacks or tape
One technique to cover a wall with newspaper is to use decoupage. This involves tearing or cutting the newspaper into strips or pieces, applying a decoupage glue to the wall, and then adhering the newspaper to the wall in a desired pattern. Once dry, a sealant can be applied to protect the newspaper and provide a finished look.
Finding a newspaper that covers the London Stock Exchange in the United States is almost impossible. The two newspapers most likely to cover the London stock exchange are The Wall Street Journal and USA Today. The Wall Street Journal does not cover London, but it does cover Europe in general. USA Today also does not cover the London Stock Exchange, but it does cover the stocks for the United Kingdom.
The technique used by Roman painters was fresco, which is a technique of mural painting. It is executed on freshly laid lime plaster. Watercolours are used. Water is used. When the plaster sets, the painting becomes an integral part of the wall
The idea is good, but I'm not sure the technique will work. News print ink is such that it will lift fairly easily, but as you pointed out, it is reversed when you remove the paper. You could use your computer to reverse the image, and print it in black and white. You can also adjust your font size while you are at it.
Wall Of Sound technique.
Vinyl or plastic based paint.
What material you use to cover an imperfect wall will depend on what material the wall is compose of: studs and Sheetrock, concrete, brick, etc. Possible materials that could be used include: paint, wallcovering, paneling or even drapes. Using a textured material will best mask imperfections.
The crackle paint technique gives the wall texture. People absolutely love it!
Wall paper is a decorative paper used to cover dry wall when you redo a room in your house. Wallpaper can also be a border allowing you to make a stripe.
One common media element used by newspapers but not by the Wall Street Journal is color photographs. The Wall Street Journal traditionally uses black and white photographs in its print edition to maintain a more serious and professional tone.
A parados was the back wall of a trench and was used to provide cover for soldiers as they moved about and fought in their trenches.
area
I don't think an umbrella should be used on a balcony of that size. A roof cover would probably be a better choice, like a cover that can extend from a wall.