thank you for your advices;you must take into consideration that :
-i have "release forms" named "agreement" in my papers, signed with some models but not with all (as a coincidence those 4 from the pics are -

)
-the photos are almost "raw" ,the vouyourish side of the photos is the main attraction
-how can i use this content if i put all the pics on the web? those are just some thumbnail samples