Birthday is one of the most celebrated day that most people have in their lives. They celebrate birthday to appreciate their lives and one of the way to express their gratitude that they are born and for all the blessings in their lives. It is so because not only that they get surprise, but because it means that they are loved by people who throw a surprise party for them. However, if you plan to make a surprise party to your loved ones, you should consider several things like the concept that can be a pajama party or just a regular party, but one thing that most people use to surprise someone is the light. Interior Design.