Add an image overlaying a portion of the Soliloquy slider
.soliloquy-container .soliloquy-slider:before {
display: block;
content: '';
width: 50%;
height: 100%;
position: fixed;
right: 0;
z-index: 9;
background: url('http://www.360fashion.net/wp-content/uploads/2013/01/image-placeholder-500x500.jpg');
background-size: contain;
background-repeat: no-repeat;
background-position: right center;
}