I think chiffon is too thin/transparent for it to work without throwing a double image on the glass (the light is passing completely through it).
I've always seen folks on here discussing using dollar store white shower curtains for window projections. Pull it tight so there aren't any wrinkles and it should work just fine.
I've always seen folks on here discussing using dollar store white shower curtains for window projections. Pull it tight so there aren't any wrinkles and it should work just fine.