Try testing: 7.0-1
feet, toes, toenails, sandals, flip-flops, flip flops, high heels, stiletto heels, platform footwear, platform heels,
Sizes for starters: 1216*832, 1408*1024, 1600*1216, 1792*1408, 1984*1600
Also, don't use Hires. fix, for A1111, takes really long plus generating images with the starting sizes are best suited for IllustriousXL, use adetailer to enhance your images.