I can't speak for everyone else, but I feel like many of us are "winging it" more often than not. I know that I am. I can't ever say that what I "see" happening and what actually happens match. It's often just a lucky coincidence that what I "thought" might work and what "actually" works are kind of similar. For Lana's center, it took me 3 tries to make it come out in a way that I was happy enough to pass on to the next person. And I think we've all kind of come to expect that some centers are easier to make a plan for than others - and we ask for ideas and suggestions. Often.