In making an illusion for a wider room it is better if you add up a thick horizontal strips on your walls. This will create the illusion for a wider room without making it physically wide.
Make another room and take out the wall
Darker tints will make a room smaller.
Verticly striped curtains will make a small room look bigger.
Yes, having a smaller waist can create the illusion of wider hips by emphasizing the contrast between the waist and hips. This can create a more hourglass shape and make the hips appear more prominent.
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By cleaning it
It can do but it is all in the mind as you know. The same applies to wallpaper. you hang wallpaper with narrow stripes it will make the room look smaller. hang w/ paper with wide stripes it will make the room look larger.
no
Wider.
You can make your room unique by puting your favorite fabric pattern over a bulliton board
What will look amazing to you may not look so good to others. As it is your room and you will be living in it, just decorate it the way you like it.
Mirrors would make it look bigger... maybe add mirrors on the floor and ceiling, then it would look never ending.