In the upper area of the artwork overview, click on the share button and then on publish artwork and then enter the desired e-mail address
By clicking on “shared content" you can decide what the person with whom the artwork was shared sees (Basic and Advanced)
If you want to revoke the shared person's access rights, click the e-mail address you specified, and then click revoke access rights
To complete the process click on share now
To revoke the access rights of the person with whom you shared your artwork, go to the shared artwork, click on the share button at the top of the artwork overview, select the person you want to remove and then click on cancel access