I love the random, multi-coloured pattern on this pair of plain trainers: it's an effect created by using fabric decoupage, and is the perfect use for leftover bits of scrap material. The same technique could be used to decorate tennis shoes, espadrilles, ballet flats or any old shoes that deserve one final lease of life.
For full instructions on how to jazz up your own shoes using this method, check out this tutorial.
Related: How to customise footwear with studs | How to customise shoes with acrylic paint


