I am a medium level developer. I’ve developed my website using WordPress.

Now I just want to build a custom dashboard for page creation & content upload for my visitors wrt the templates.

More info: This is a digital card website we offer birthday, marriage cards, etc…

We have some 10 templates, customer can choose which template they want & they can edit all the content (text, image & video) by signing in…

after the payment, they can share the link they have created…

I have designed everything but now I have no idea about how can I give options for my visitors to create a card by choosing the template they like & edit the information with share option.

I have spent 1 week researching this. Can anyone please give me some ideas on this

Thank you very much in advance.