Enabling covers on one of your slices is easy:

Make sure you’re logged into your Soundslice account.
View the slice’s page.
Click “Edit” at upper right.
Click “Slice details.”
Make sure “Allow covers” is checked.
Close the “Edit slice details” menu, then click “Save” at upper right.
You can disable covers on a slice at any time.

When you get a cover, you’ll get a notification on your notifications page. Make sure to give people positive feedback! :-)