Trying something new

I've decided I'm going to make a white chicken lasagna today. And...I'm just going to make the recipe up as I go. This is the first time that I've done this. Usually I'll find a recipe and then kind of make it my own by adding or taking certain things out. This time, I'm simply going off what I think will sound good. How hard can it be? I'm kind of nervous, but really excited too. I'll let you know how it turns out!