Once you've created your products, you can edit them to change their descriptions, prices, Attributes, photos, and other product data.
that can be done through the direction of the control panel to Products tap then enter the product you want be modified it by Edit Tap ... The following images for clarification:
After clicking on the Edit button, the product data will be entered through which you can modify any fields you want to edit them as like prices, upload new images, enter new Description on the product, change its section and other fields that can be modified
After completing all the modifications, please click Save bottom at the top of the page ... to save the new changes and appearance on your store.