Hi Tia,
In response to this email:
Thanks, Is there a way to delete the design since we can’t switch it from public to private?
The only way to delete designs currently is through the database, but you should only do that if you are familiar and we don’t recommend it. Thanks.
UPDATE: You can now view public designs at the URL /designs/, and you can manage and delete designs via the WP admin with our Design Manager add on.