I am curious where are you getting licence texts? I am not jurist, how can I write it? I would like only one type licence.

Have a look at this thread on MSG

http://www.microstockgroup.com/symbiostock-general/eula-legal-paypal-etc/msg305806/#msg305806

and this one on the Symbiostock forums

http://www.symbiostock.org/community/viewtopic.php?f=20&t=123&hilit=license+text

My URLs changed (from those in the above post) with the new license add-on in Symbiostock and are now

http://www.digitalbristles.com/License/standard-license-agreement/

http://www.digitalbristles.com/License/extended-license-agreement-2/

Thank you very much.