Figuring it all out before you begin
There are some things you can figure out before you start and there are some things that you can ONLY figure out BY starting. So, create like how my six year old does when she is painting. Play, don't be attached to the outcome and know that you can always start again! Be willing to give it a go, to fail, to change directions along the way. If you are willing to have anything show up and not make it super meaningful then you will have more data, more information, and more choices available.