Need woocommerce cart and checkout create properly

Hello, Woocommerce experts only, we need our cart for woocommerce to have custom code removed, we also want their to be an image of the personalisation theyve made using our personalisation tool, and have an option to edit the design they've made. We really need our cart/checkout not to be affected by updates. Our site is here: [login to view URL] user: bossusto_staging pass: !W5rSmPfsTma