Many Stop Child Executions supporters have been asking what they can do to honour Delara's passing and send a message to the Iranian officials to voice their outrage.
Stop Child Executon's liaison to Amnesty International representative Aubrey Harris offered this idea...

THREE THINGS YOU CAN DO

1. SEND A VIRTUAL WHITE ROSE TO THE IRANIAN EMBASSY.
Find an image of a WHITE rose by using Google's Image searching and email it to your Iranian embassy and/or the officials in Iran along with a short message about how you feel of the injustice in Delara's execution.

2. Make your own CARD OF CONDOLENCE to mail to the Iranian Embassy & authorities. You can use the image of the white rose that Delara drew in her own painting which has been posted on the DP blog at [1]//www.amnesty.ca/blog_post2.php?id=833 [2]

Copy and paste the image onto a word processing document rotated upside-down and aligned to the top-left corner of the page. On the bottom-right corner of the page, type in your message (or wait to write it by hand). This should fold into quarters with your image on the front of the card and your message inside.

3. LEAVE WHITE ROSES AT THE ENTRANCE OF YOUR LOCAL IRANIAN EMBASSY or consulate on Wednesday 6th of May. This action is being taken around the world.

Here are available contacts for Iran in the action (please keep in mind that a two-month stay of execution had been issued by the Head of the Judiciary only two weeks before Delara's sudden and secretive execution):

Head of the Judiciary:
Ayatollah Mahmoud Hashemi Shahroudi
c/o Director, Judiciary Public Relations and Information Office
Ardeshir Sadiq
Judiciary Public Relations and Information Office
No. 57, Pasteur St., corner of Khosh Zaban Avenue
Tehran, Iran
Email: info@dadiran.ir [3] (In the subject line write: FAO Ayatollah Shahroudi)
Salutation: Your Excellency

Judiciary spokesperson:
Alireza Jamshidi
Howzeh Riyasat-e Qoveh Qazaiyeh / Office of the Head of the Judiciary
Pasteur St, Vali Asr Ave., south of Serah-e Jomhuri
Tehran 1316814737, Iran
Email: info@a-jamshidi.ir [4]
Salutation: Dear Sir

Leader of the Islamic Republic:
Ayatollah Sayed ‘Ali Khamenei
The Office of the Supreme Leader
Islamic Republic Street – End of Shahid Keshvar Doust Street
Tehran, Islamic Republic of Iran
Email: info_leader@leader.ir [5]
via website: //www.leader.ir/langs/en/index.php?p=letter [6] (English)
//www.leader.ir/langs/fa/index.php?p=letter(Persian [7])
Salutation: Your Excellency

Iranian Embassy in Canada:
Mr Bahram Ghasemi
Chargé d’Affaires, Embassy for the Islamic Republic of Iran
245 Metcalfe Street
Ottawa, Ontario K2P 2K2
Fax: (613) 232-5712
E-mail (Consulate): consulate@salamiran.org [8]
E-mail (Embassy): iranemb@salamiran.org [9]
E-mail (Ambassador): ambassador@iranembassy.org [10]

Director, Human Rights Headquarters of Iran:
Mohammad Javad Larijani
Howzeh Riyasat-e Qoveh Qazaiyeh / Office of the Head of the Judiciary
Pasteur St, Vali Asr Ave., south of Serah-e Jomhuri
Tehran 1316814737, Iran
Fax: 011 98 21 3390 4986 (difficult to reach)
Email: info@dadgostary-tehran.ir [11] (In the subject line write: FAO Javad Larijani)
Salutation: Dear Mr Larijani