Yes and yes, Kestrana. Any processing technique to achieve the iconic effect is okay (using painterly effects to recreate the Mona Lisa, using colors for Andy Warhol, etc)–except photoshopping in actual elements (people, things, places) that aren’t in the original picture. Examples: You could recreate the iconic Hindenberg (burg?) disaster, but you couldn’t do so by photoshopping in the exploding flames from some other photographic source, or you could recreate the Abbey Road album cover–but you couldn’t photoshop in the actual Abbey Road or, having a picture of the actual Abbey Road, photoshop in 4 people walking across it.
The basis needs to be a photograph with all the necessary elements already in place.
Now how do we say that concisely and clearly, I’m not certain. Suggestions welcomed!
//edit: redefined the description–bettar? Si, o no?