I have been hand knitting socks for 10 years. I also, teach sock knitting classes.
Last fall, when I was hanging at Jeff and Julie's place. Julie measured her feet and Jeff's feet. I custom fit my hand knit socks. Jeff's choice of color was red. There are his red socks. Jeff called a little while ago and said he had his new socks on. On the side of the heel, I purled in a little heart shape. Julie knew about the hearts, and had Jeff look over his socks. He found the 4 little hearts. I tried to photograph the heart, but no luck with that.