Custom Image Upload Functionality Help Needed

New Member
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Hi folks - browsed around the community and can't find exactly what i am searching for so here is my question. 

I am trying to customise the image upload functionality on my website Funny Aprons where we will be selling custom designed funny aprons (collection link). However if you go to my product page here for example heart apron the image upload button is pretty minimal. I would like to add in more functionality such as the ability to preview the uploaded image on the apron by using a service such as API to pull the request and then preview it. I would also like to add in more functionality as per the image here

I understand that i will most likely need a developer for this - i also know that the above is do-able, however need some assistance on where to find such a person. Please point me in the right direction. Thanks