At first, make sure the customizable skins are ungrouped. To find the ungroup tool you must select your project, click with the right button and click on ungroup, or click on ungroup on the sidebar.

As Cricut already has a native bleed feature, it is recommended to use Skins without bleed to create your personalization.
To make it easier, hide all objects that you will not use.

Then, ungroup the skins again

Change the operation to Print then Cut

Choose and select which faces to apply a pattern

On Print type change color to Patter

Choose the pattern that you want to apply
