I generally drive in socks so I can feel the accelerator pedal better. I also rest my foot on the side of the footwell and squeeze the accelerator by moving just one side of my feet.
I suggested this in tips, barefoot, or socked, increases the sensitivity of all controls so you only accelerate and brake as much as you need to. It makes for a very smooth, efficient economic journey. I used to do it alot in my smaller cars when my size 14 shoes would press three pedals at once lol!