Transfer content to new Shopify template and enhance design

Hello! I need some help transferring my Shopify store into a new template which I've already purchased. My current online store is developed and running well, but since most of customers/users visit on mobile, I believe the new store template will enable the store to be more mobile optimized. The Freelancer also needs to have some design skills as I have images (model or product shots) that we can leverage as web banners. I have a few 'key' products and I'd also like to develop a product comparison page within the online shop so that customers can easily compare the difference.

I am based in Australia.