I do the pin or hold in place and then flip as if it is sewed. If it covers and has enough left to trim, then I am good. If it is too far down, I adjust the whole piece up. After every adjustment, I go through the pin/hold in place and check to see if it is big enough and placed correctly. If it doesn't cover it with enough fabric to trim, then I try a larger piece. And....I get to rip at least one time. lol