And guess what? You can find handmade comforters which have not yet been quilted at just about any secondhand store. My hand to God.
Personally I like the weird ones. The thoughtless fabric combinations. Though once in a blue moon I do find some real gems like this sweet little polyester number. (Somebody had great color sense and absolutely no tactile sensibility whatsoever!)
Once you have your un-quilted comforter then mend it if it needs it, wash and dry it, and baste its layers in a big grid or parallel columns just to help keep it square. Then you can begin quilting.
I do the Kantha stitch which is pretty much just straight stitching in straight lines. I use embroidery floss in colors which contrast with the fabric so they stand out, and I follow the shape of the piece of fabric I’m stitching within.
One of my favorite stores carries quilts just like this for beaucoup bucks and every time I see them I do the math and figure I’ve got around two grand worth of quilts for about the cost of a year’s worth of streaming Netflix.
Nothing wrong with my color sense!