I bought several small (about 15 inch square) online. Hand quilted them and then used the quilt as you go method to make it bigger.
(After doing the pre-printed pattern, I marked the top to a 12-inch square. Then I put right sides together and sewed along the line. Opened it up and trimmed my batting to the width, just so it layed flat. Then I trimmed the back fabric to withing a quarter inch of each other and used my excess fabric cut from the front to join the back. It has a lattice look in the back and I was able to make it a lap size quilt.)
I can't show pictures because I gave it away without taking a picture. Renee if your out there please post a picture. LOL I hope you can figure out what I'm talking about from these instructions.
But you can do any size. MTS is correct in this. I think my stiches ended up being 8 per inch. I also have a king size about half done. I'll post pictures of it.