My dear fellow homeowners,
I know how wonderful it is to decorate your house and make it your own. After a project is done, you are able to step back, wipe the sweat from your brow and say, "Yes! This is mine!" and feel quite pleased with yourself. Be they formal, country, modern, or eclectic - whatever style you like - the floor coverings, the furniture and the paint are all of your own choosing. Being able to live in a beauty that you've created is a joy.
But please, don't wallpaper unless you're happy knowing that the future inhabitants of your house will spend hours scraping and steaming and cursing the day you were born.
p.s. you might also want to find out where the main sewer line is and then specifically NOT plant a tree on top of it.