sometime I have a certain fabric I want to use, So I get out that fabric. Measure. Then look at the patterns, and make sure you have enough of that fabric to use by the different patterns you have. pick out 2 or 3 patterns. go do something else for an hour or so. Go back , look at the patterns again. This time they may look different. Don't stress so much. If you can't deside today, wait untill tomorrow.