The woman who just finished one of my quilts trimmed it too close to the edge of the quilt. She did a wonderful job quilting, I'm not complaining, I just want to know what I can do now to "fill out" the binding when I attach it. There isn't enough batting to do the job. I had thought about just making the binding much wider, and then folding it a few times-would that work? Any other suggestions?
Thanks

I always trim to the edge - so don't understand what you are saying. I make a 2.5 inch strip, fold in half and press, stich on the topside, right sides together then bring to the back folded in half and hand stitch on back....

I have never had batting in the binding..

I'd like to see a picture of the edge you are talking about.
As a longarmer, I never trimmed the customer's quilt. I left that for them to do.
Unless I was commissioned to do it, or to even finish the binding process as well as the quilting.
Anyway, let us see a picture of it if you can.

One thing you could do is cut narrow strips of batting and "couch" the batting strips along within the binding as you apply.

Ditto.

A "full" binding does look better on SOME quilts. My bindings do vary in width.

This is my first thought. Cotton/poly blend batting cuts beautifully into strips. Can you sew on a strip of that along with the first stitching of binding, than fold over to the back and stitch down. You would have to experiment with how much batting to use.

I think you could just sew a strip of binding along the edge and use that to "fill" in a regular binding strip. For me, that would be easier than trying to multi-fold the binding.

I like my quilts with a little extra batting, too. When I trim quilts for customers, I ask how close they want it trimmed.

There are a couple of things you can do.
1) make a filler piece of batting to go into the binding or 2) make your binding a little narrower, say 2-1/4" wide. Your binding should then wrap around and end up right on the seam line.

Could you move your binding in a little from the edge? Instead of raw edges even, just back it in a bit.

I usually trim my quilt making sure that the sides are straight and then insert a 1/2 inch strip of batting inside the binding before folding it over to the backside. It makes it look full and not flat.

I like mine full too. I trim my own though so I can leave some batting around the edge. I like the idea of sewing a thin strip of batting when you attach the first edge. It would give you that full effect.