Please tell me, can i use "Public domain / GPL / OFL" and "Free" license fonts for my shutterstock illustrations for example http://www.shutterstock.com/ru/pic-133261823/stock-vector-retro-elements-for-summer-calligraphic-designs-vintage-ornaments-vector-set.html?src=pp-photo-141916366-g85FBSVcw3X8rTGFY8OyyA-7 ?

Yes