I feel like my baby isn't totally secure. Am I doing something wrong?

If the wrap doesn't quite feel right, try checking 3 things: 1) tighten! tighten! tighten! making sure to use the guiding edge to pull the correct piece 2) make sure the straps across your back are flat 3) make sure the 'x' on your back is in the center of your back, or higher if carrying a bigger baby.