If I think one fabric is just too much, I take a photo on my phone, change it to black and white and WOW, does a too much fabric stand out! If I am just not sure about a border or a combo, I like to lay it out on the bed and leave it. Every time I walk in the room I look at it with fresh eyes. Is it growing on me? Is one fabric just jumping out as wrong? Does it really look different in the different light (room light vs. daylight). Trust your gut. If you force yourself to use something that you actually don't care for, you will probably end up with a UFO!