Currently it’s not possible to directly print pictures from your Pix-Star account as we don’t have connection with other printing web sites.
What you can do is go to your www.Pix-Star.com account, select the pictures or the album you want to print, then you will see a “download selected” or a “download album” button so that you can download the pictures or album inside your Computer.
Once done, you can easily send them to your usual printing company or web site for printing.