Megan, I perpetually have problems with the directions for making french knots and the like...it would be great to see a really good explanation of them!
I think when I do a French knot (it's been a while) I wrap my floss arount the needle 2 maybe 3 times tops, push the needle into the fabric, but I hold the floss that is coming out of the fabric tightly as I pull the needle through the fabric. That seems to make a nice tight knot for me.
I actually like doing French knots. I think it's been a couple of years since I picked up any embroidery. When I come across the napkins & placemat I was working on, I'll do a French knot & post some pictures of how I do one. Maybe that will help a little. If it's OK with Megan, that is.
I can't stand it when a French knot is loose and they are such a pain to take out, too.