I don't know that I understand your problem completely- but your backing and batting should be a few inches all the way around larger than your quilt top- then you lay out the backing (if using a floor you can tape your backing down smooth) then lay the batting on top of the backing- smooth it and secure it around the edges- then center the top over the backing/batting layers- smooth- then start pinning if using the pin method of basting- start in the center and place the pins in a grid pattern about every 4"- then pin all around the edges of the top well- then you should be able to remove the tape and pick up your sandwich to start quilting. after the quilting is completed the backing/batting is trimmed when you square up your quilt- then you add your binding.