same we trying can you suggest

We are tried to customize/override the extension template file. we want to override below extension and its originale path is

html/app/code/Webkul/Marketplace/view/frontend/templates/product/add.phtml

/html/app/code/Webkul/Marketplace/view/frontend/layout/marketplace_product_add.xml

Now we created a file structure to override this template with file but changes not appearing can you suggest what i missing.

html/app/design/frontend/Webkul/Marketplace/view/frontend/templates/product/add.phtml

html/app/design/frontend/Webkul/Marketplace/view/frontend/layout/marketplace_product_add.xml