Chances are, you are feeling like you've had your share of parties for now. But listen, Valentine's is not that far away and then St. Partick and the First Day of Spring (you do celebrate the first day of spring, don't you?!) and Mother's day and birthdays... You see, there is always a reason to celebrate and, since there is a reason, why not celebrate in style. So, let's talk about the principles of good party decor. I'm a wedding designer and I use these all the time to prepare wedding receptions but they totally apply to casual party planning. I will use my upcoming birthday as example.