I too, was instructed to go faster....what was that teacher thinking????
take a breath, fluff the quilt around your space and practice balancing hand and foot speed. and don't expect to get it perfect for quite some time. you're only working on the space between your hands, so pretend that's all the bigger your project is. then go onto the next project (area).
I tell my beginner buddies to practice on a fabric w/a big floral print, try to follow some of the design lines, you'll get a "feel" for the motion.
I also like to practice with pencil and paper first...if I want to try a different meandering style, I'll doodle with it until I get comfy w/the movement.
remember, this is something you love doing...don't stress over it.