Birthday is usually celebrated by having a party by is thrown by the one who is having the birthday, or by people who care for someone and want to make them happy by throwing a surprise birthday party. Some of the people considered surprise party is more memorable compared to birthday party that they set by themselves. 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.