Adding Image for each testimonial

I wanted to know how do I add an image to each testimonial. Currently there is not option to do so. I was thinking of using ‘set featured image’ option as the method to do so. Could you point me in the right direction as to how to achieve this?

I would love to submit the code back to you once this feature is added and contribute to the development of this plugin.

Please do let me know. Thanks for the lovely plugin.

http://wordpress.org/plugins/ivycat-ajax-testimonials/