Tributes and Painting

I don't see any stories here on "Tributes" or "Painting".
This is where you stroke yourself off onto a picture. Some people seem to do it on their favourite celebrity, others onto girls they know.
I was asked by a guy I met on line once to cum on his girlfriends pic which he sent me - just her face. He didn't have pics of her tits or pussy but he described them to me and I fantasised about him watching me cumming on her real face while I masturbated looking at her pic. I took photos of my cock over her pic and then the cum on it. He was delighted with the results.
I also had a woman send me her pic. Not her face this time just her naked body. She had big tits and a shaved snatch. I did the same for her.
She told me she masturbated to the photos I sent her.
I have read of guys painting their sister's pics ... (mmm, that's a good fantasy story; a guy getting caught by his sister shooting his load over her pic).
I sometimes fantasise about a group of guys talking about a girl they all admire - about what she'd be like naked, what her tits and slit is like, what they would like to do with her then all getting horny and printing a picture of her and all jerking off onto it.
Of course, film stars and others are favourites, but I must admit, seeing videos of guys doing it to some girl they know and fancy is a real turn-on for me. I don't know if many women like the thought of this or not but boys will be boys.
Anyone else done similar things?