I've been doing my own pedicures, and I can get the nails to look quite good. But my heels are a disaster. There's extra skin that builds up on my heels and needs to be removed and I'm not sure what the best tool for this is. I tried a ped egg, but I swear it would be even worse a few days later. I have some sort of file-like tool and it does practically nothing. Any other recs?? Tia!