Images and product description appearance control

Hello,

When I list a new product: write a product description and add an image I would like to control how it appears on the page.
I want that the picture will be above the description.
Right now the text and the image are on the same level and since my description is long,
Its kind of around the image.

Please help!

Best,
Shani

https://wordpress.org/plugins/wp-online-store/