Add slideshow functionality to Shopify product page

I need someone to add a slideshow functionality to a Shopify product page. The images and thumbnails already exist; what i need YOU to do is to simply add a left and right arrow either side of the main image which will then toggle through the images. This is a rather simple task and i'd be willing to hire someone with no Freelancer feedback, as this would be a great opportunity for you to get started as a contractor. In your message, please start with "Hi Nick" and please state an estimated cost. I will provide more information so you can see EXACTLY what i want and how i want it - you must be ready to work right now - this is a simple 10-20 minute task for those with the knowledge. Regards, Nick.