Web designer | Shopware 6 | Build a design mockups for store

We are building a Shopware 6 shop and would like to have design mockups for landing and item detail pages.

We are planning to buy a customizable theme: https://store.shopware.com/en/tcinn18041426622/themeware-modern-customizable-responsive-theme.html

And later adjust this theme by the created design mockups.