I fold my backing in half lengthwise, put pins along this line on right side that is down, I then fold in half widthwise and put a pin to mark center and several on that line. I mark the batting as I did the backing, this time I mark the center, both sides, then both ends just in the edges. I take out the center pin before putting the top on. I mark the top same as backing, right side up. Since I cut the backing 2-3" bigger all around, I use a ruler to line pins up with pins on the top. I feel for the pins in backing, batting and pin that section, move to be able to pin all the top. I turn over the quilt, take out all the pins used to mark the backing. I use wood worker clamps to clamp the backing,batting and top to my glass top dining table. Usually quilts are longer than the length of my table so I use a rectangle card type table to put overflow on. Sorry, this is long.