How To Decorate A Wall

decorate
deck: be beautiful to look at; "Flowers adorned the tables everywhere"
award a mark of honor, such as a medal, to; "He was decorated for his services in the military"
Make (something) look more attractive by adding ornament to it
make more attractive by adding ornament, colour, etc.; "Decorate the room for the party"; "beautify yourself for the special day"
Provide (a room or building) with a color scheme, paint, wallpaper, etc
Confer an award or medal on (a member of the armed forces)

how to
Practical advice on a particular subject; that gives advice or instruction on a particular topic
Providing detailed and practical advice
A how-to or a how to is an informal, often short, description of how to accomplish some specific task. A how-to is usually meant to help non-experts, may leave out details that are only important to experts, and may also be greatly simplified from an overall discussion of the topic.
(How To’s) Multi-Speed Animations

wall
surround with a wall in order to fortify
an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure; "the south wall had a small window"; "the walls were covered with pictures"
anything that suggests a wall in structure or function or effect; "a wall of water"; "a wall of smoke"; "a wall of prejudice"; "negotiations ran into a brick wall"
A continuous vertical brick or stone structure that encloses or divides an area of land
A side of a building or room, typically forming part of the building's structure
Any high vertical surface or facade, esp. one that is imposing in scale