From where the "Find my friends" took My photo ??

Hey slawekfromizabelin!

Your photo for the Find My Friends app is sourced from your contact card in iCloud. Navigate to the contact card for yourself at iCloud.com and then follow the instructions for changing your photo found in this article:

iCloud: Add or delete a photo for a contact

http://support.apple.com/kb/PH2662

Take care, and thanks for visiting the Apple Support Communities.

-Braden