I am building a website in WooCommerce.

What is most efficient way to replace the original theme site template pictures? Do we replace them with same size and pixel pictures and nothing wrong will happen to allignment? For example if main page header picture of a product is 1920 * 1000 then we crop pic to this size and replace it with ELEMENTOR? And then keep going on with all the pictures in the template to make it yours

Thank you