How to proceed to Order product after Product Customization

 Hello, i am just a novice in this technology! I have managed to setup Fancy product Designer and woocommerce,  My Main problem now is that i don't see an option to complete product design and then go to Checkout page. May be i am missing something here! I need to know how exactly the Fancy Product Designer  and Woocomerce Would work it to the CheckOut page after design completed. This is a product link for example.  https://commerce.phemrise.com/product/my-first-t-shirt/  I don't know if may be i still need to do some settings in the admin back-end to make this works. Gurus in the house should please help me out on this. Thank you in advance..