Don't you mean transmission-projection? At least in my brain, reflection-projection is how you'd project a page from a book on the screen, while slides are intended to have the light shine through the slide and then onto the screen.
Oh, and congrats to kxjru for shooting some slide film. If you liked Ektachrome 64, you should try Fuji's Provia 100F. That stuff is da bomb if you're shooting people. Velvia 50 is amazing for landscapes but not so much for people. Provia 100F works well for both, as it's less saturated, less contrasty, and more neutral.