How to hide my picture from some of friends in facebook, by custome sharing ?

[Mind]

Please read my question carefully, i know how to hide picture or album from some of friends, i am hiding by custome privacy and then specific people or list.....?? but my problem is that when i do this it show the list of my all friends to whom i shared with... if he/she click on right hand side where we change the privacy, but when i check the others album it shows that pic is cutome then why it is not shown when i do the same ... why ?? why ?? anybody can help me out if anyone is fb expert here???
@ abraXus one of my friend tell me about this and then i got surprized to see this because i was not aware about this and then i check from another profile same thing happen, i still could not understand what happen..

[abraXus]

only you can see that list of people.... other people just see the word "custom"