As you can see here I hold onto the handlebars and sew at speed 80. I regulate the length my stitches by how quickly I move my hands. The actual technique I use is called "free-motion quilting." This means that I create with "free motion" the stitched designs on the quilt. I don't use pantographs and the machine is not pre-progammed, I simply design my own. Waaaaay fun! I'll have to post a video sometime.
Step#1: I recieve the quilt top from the customer along with the backing.
Step#2: I pin in the backing and the top to the cream colored canvas fabric which is attached to the black metal bars. The batting (the stuffing in between) is gently draped between the two layers and not pinned in. Every time I complete 2 passes (sewing down the quilt top from left to right) I roll up the part I just quilted and start on the next 2 passes until I'm done.