What do you mean by “wider original design”?
Under the current Commercial Licence and Extended Licences you are NOT able to use any Resource on it’s own, but required to use them as part of a wider original design.
To form an original design, you must combine your purchased product with other resources and elements. The purchased product must not be the primary integrity of the design. Your new end design needs to be noticeably different from the original resources you purchased.
In addition to the above-mentioned requirements, you’ll need to make sure that the original Resources cannot be extracted if you are intending to sell a digital end products.  Add text overlap items, use backgrounds and other design elements to achieve a “baked in” effect.
Here’s a visual example to help you out:
If you would like to use the Resources in a stand alone fashion, there is an Enhanced License option. For further information, please contact me at hello@prettylittlelines.com