R U Talking about the mod?

If so - you will be better served by going to that specific mod forum and post it there. (I happen to know if it's the mod I'm thinking of, yes - you have to seriously look for it. But that is IF it is the mod I'm thinking of.)

Hi ethizle, Yo
Yo, that's my mod dude :)
It's been a while since I placed them, and then searched for them, There's like about 900 of them.. I am sure I did put one of the blue collection in dragons reach, one is definately on top of the cupboard upstairs, I don't think it's in the jatls room or the other two bedrooms up there, but in the connecting central room, it's on top of the cupboard, yep that's it. you have to jump and grab to get it which makes it incredibly hard to steal, coz theres a guard there who wont take kis bloody eyes off of you.
If you havn't tried it yet, try the black collection, that's fun ;)

Annwynn here Has found them al..
http://steamcommunity.com/workshop/filedetails/discussion/157306942/846958223180814590/

Yikes, 900 skulls to collect. I wonder if Telekinesis and the "quiet cast" perk would help.