Given that your feet spend the best part of the year tucked away in some (admittedly rather dashing) brogues, it's easy to overlook their upkeep in favour of the body parts that are more often on display. By summertime, however, months of negligence and incessant pavement pounding will likely have turned your feet into a pair of hooves, something even you can't bear to get to grips with, let alone present to the world. Without the necessary preparatory measures, the simple act of donning a pair of sandals can therefore become a public offence. This season, don't let ingrown and discoloured nails, corns and calluses dull your sartorial edge. Here, I've compiled a few handy DIY tips to help make your sandals and flip-flops a viable, almost pleasurable option this summer.