Wanda pray that you get your mojo back. When I go to Texas to visit my son, the only place I can sew is on their breakfast bar and I too have that problem. I use my grandkids step stool and place the pedal there and rest the stool on wall, I find this much easier.
I am sure that once you get your creative juices flowing, you will not stop. Good luck on your sweatshirt project.