Owl Carousel, making custom navigation

You need to enable navigation and edit navigationText:

Assuming this is version 1.3.2

$("#owl-example").owlCarousel({
  navigation: true,
  navigationText: ["<img src='myprevimage.png'>","<img src='mynextimage.png'>"]
});

Assuming it’s version 2:

$("#owl-example").owlCarousel({
  nav: true,
  navText: ["<img src='myprevimage.png'>","<img src='mynextimage.png'>"]
});