So, the premise of this movie is that Tony is a passionate but supremely talentless artist who runs away to Paris where he somehow becomes the toast of the Rive Gauche and then accidentally becomes an art star when a famous art dealer (George Sanders) gets his worked mixed up with that of his friend Paul. Even before the latter happens, I think Tony’s popularity with the bohemians is supposed to be an emperor’s-new-clothes thing— but here’s the thing: his “bad” paintings really are more energetic and interesting then the movie’s “good” paintings.
Given that the movie ends with Paul making new paintings influenced by Tony’s style, and those paintings being acclaimed* maybe the point really is that it’s the synthesis of Tony’s enthusiasm and Paul’s skill that makes for great art. Apparently the movie was a favorite of many painters of the time, including Lucian Freud, and I’m curious to know how they interpreted it.
(also I’m pretty sure Tony had a green carnation in his lapel in one scene)
ETA--
Apparently in 2002 the London Institute of Pataphysics reconstructed and exhibited all "Tony Hancock's" painting and sculptures from this movie.
Looks also like somebody did the same thing on a lesser scale and is trying to sell their copy of "Ducks In Flight."