I'd love to be able to manipulate things...like stick people's heads on other bodies and stuff, but I can never do it
I never tried too... It's probably not easy to do ^^ For the moment I'm just added new scalps to someone's head (like I did twice for Joe), or put two characters together on the same picture... And even that is not an easy thing to do, because the lightness/contrast is not exactly the same so the result is sometimes weird.

And thanks for the tutorial ^^ I'll see if I can translate it in PSP, because it's really beautiful.