Responsive text on image

I have been asked to create an entry form for a contest. Now usually i’d use wpforms which i use for everything else on the site when its form based.

However, they want a live preview for the text to appear on an image.

For example, a picture of a sign and when they type into the form the slogan they want on that sign, it then needs to appear on that picture of the sign as they’re typing, then if they’re happy they can then click submit and off the form goes to the relevant email.

So essentially i need an addon for wpforms that does this or another plugin that can be a form and have the live preview.