Size & profile of household: Whether it is a joint family or a Nuclear family bedrooms are always considered private. Based on the interest of the dweller the bedroom should be furnished. Kids require a combination of a playful & serene environment. Adolescents require privacy in their bedroom. Elderly people need accessible furniture in their bedroom. So take into account everything.
If you're implementing wall papers in your bedroom it is best to clear out any mess or clutter you may have our your walls. It goes true specially for small bedrooms usually wall paper decoration along with other wall items here and there may look messy. Always remember that a clean bedroom always looks much better and appeals more too.
If you have children or even pets your night is often interrupted. Plan your kids' bedtime accordingly most probably a couple of hours before yours. On the other hand when it comes to pet dogs keeping them active throughout the day would mean that they sleep better. Moreover keeping your bedroom quiet and dark is an indicator to the pets that it is bedtime.