How to copy and paste images from my original template into my design

In your dashboard menu, select COOKBOOK > LAYOUT and then open the spare pages.

Scroll to find the spare page you want to use in your cover or inside page template. 

Click on the thumbnail (so the page highlights in blue), right click, and select press control C for PC, or Command C for Mac. Or select from the google menu. See screenshot below

Open your cover or inside page design template. Click on the thumbnail page before where you would want to place the design element page (highlighted blue). Right-click and select and paste. Press Control V for PC and Command V for Mac. From the pop-up, select "match styles in this presentation. See screenshot below.

Alternatively, you can just click on the image you want to copy in the SPARE file and copy onto the page in your layout tempate.