corner according to the design size and attempt to line it up and sew directly to the handkerchief raw edge?

Sandy, I like what sciencewidow said and agree - if the design is made to work with it in that manner - go for it - if it is just a FSL corner that you want to put on a handkerchief - I would stitch it out - attach it to the handkerhief and then apply 'Fray Block' - allow to dry - then cut away the corner of the handkerchief. As I also agree with what Meganne said, the LACE can shrink some. Each technique can and will work - depends on what you are comfortable with. Good luck! *4U Shirlene

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I do it exactly like sciencewidow. I do have the ability to move my embroidery arm in very tiny increments to assure that I get it exact. I generally print my design (don't forget to change its color because white doesn't show on white paper) and then mark exactly where I want it positioned with an erasable pen.;)

I would sew the dried design on top of the (starched) handkerchief with a narrow zigzag stitch and then cut the hanky back to the zigzag. At least that's what I used to do with handmade bobbin lace. Worked well for me.

I think jrob stitched some napkins or hankies with lace corners. maybe , she will come to your rescue. I saw the corners on Sonja Showalter from The Stitchery Mall and drooled.

Sandy I think it depends on the actual design and how confident you feel.

I would first do a test stitch of the design to make sure you are happy with it and its size.

FSL tends to shrink a little once the stabiliser is washed out, so, if it was me, I would stitch out the lace, wash it thoroughly in warm to hot water to soften it, let it dry and then see how it looks, before making up my mind.
Hugs n roses, Meganne