How to add a continue shopping page?

I want to create a variable catalog/order form with pictures and will need to know how to add a continue shopping field as well as a final payment field where credit card information can be received. 

The template that best fits my needs is attached but there is additional information I need to add if you have a solution for another template please advise.

If I understood you correctly you want to sell products and you want to create a payment form. 

Inside of this guides you can find out more about payment tools and how to set payment form:

Order Form Basics

Setting Up Your First Order Form

How to Add Options to Payment Forms?

Create Sub-Products Based on a Product Option

You can also check Payment Form Templates.

If there is something that you are unable to set on your payment form, please provide us more details about what exactly are you trying to achieve. 

Let us know if you need further assistance.