To setup the woocommerce product page layout click on Appearance->Customize in your wordpress dashboard.
When you are in Customize page click on Tiam: Woocommerce link (this link will be visible only if you have an active Woocommerce plugin active on your website).
After that click on general to open the settings page of general woocommerce layout
In this page you can configure a lot of general aspects of your ecommerce, like displaying the star rate under your products, in how many columns have to be displayed the cross selled products, and if the content layout style have to be boxed or not.
There is also another section for WooCommerce configuration. To access this section (that is the default WooCommerce configuration panel) you have to go from Appearance->Configuration to WooCommerce link.
Here you can configure the store notice, the product catalog (here you can set the visibility for products, category and sorting options) and size/aspect ratio for your product images.
When you’ve done with your settings just click on Publish button.