You can use your own custom images for stars instead of using font icons. To be able to use your own custom star rating images, you must enable custom images in the plugin styles settings. You will then need to upload your full star, half star, empty star and hover star images and make you set the appropriate image width and heights as per your custom image dimensions. All images must the same size and should be the same shape. The following image mime types are supported: image/jpeg, image/png, image/bmp, image/tiff and image/x-icon.
Note: The following star images were originally sourced from http://www.iconarchive.com/ and modified to create a half, empty and hover star images.