When working with vector - created art and the source art is unavailable, modifying the art to create a logo can be a pain, to say the least—particularly when it’s flattened and the background needs to be knocked out.  A careful combination of Invert (Command - I [PC: Ctrl - I]), Color Balance (Command - [...]

Create a professional poster is about using bright colors, playing with lightness, perspective, geometrical forms, besides photomontage techniques and digital collage. Very elegant!