I love spray basting - here's how I do it:
First lay on paper or something you can wash - I use paper (Moving/packing paper) lay down a few sheets just
so they are about 15" beyond the edge of your quilt background.
Then lay your batting on top of the background fabric.
Turn over both of those so the batting is now on the bottom, smoothing out the bottom bat,
then lay your background fabric with the right side up - facing you
Fold the background fabric in half so the bottom of your quilt is closest to you and
the left and right sides are on your left and right sides of your body then LIGHTLY SPRAY
the batting - now fold the background fabric back over the sprayed batting and be
sure that you do not press it down until you have smoothed it down starting at the
fold and working your way to the bottom of the quilt.
Now spin around your quilt, so the top is the next area you are going to spray
fold back the background fabric and again SPRAY LIGHTLY on the batting,
now fold the background fabric over the sprayed batting and smooth as you go without
pressing it down.
When you are happy that all the creases are gone, then flip your quilt over
so now the unsprayed side of the batting is on the top facing you.
Put the top (your fabric that you made the top out of) on top of the batting,
and fold in half, then do the same LIGHTLY SPRAY baste, on the batting only...
and fold your top back to cover the top of your quilt - repeat for the other
end and once you are satisfied you can smooth down - now it will not move
and you can quilt it using your stippling foot. Start your quilting in the middle
of your quilt - when you get to the outside - I run a basting machine stitch
along the outside just to hold down the fabric about 1/8" in from the edge.
You are ready to "Square up your quilt" - first measure across the middle of your quilt
then measure across the bottom and lastly measure across the top and adjust your quilt
accordingly
before you put on your binding.
If you have lightly sprayed, then it will not gum up your needle. I'm not really
good at explaining to I hope you can understand my version.