Poster Design

Could someone possibly please create an editable PSD file (which we could use to edit/alter in the future) of a poster advertisement for the musical 'My Fair Lady'? The poster would contain the title of the show, the company presenting it, the date, plus details of the writers/credits. We'd quite like a bright watercolour theme, with the hint of a woman's face (see samples). The title and credits must be a specific size in order to fit licensing requirements (more details will be provided). Original poster must be A3 size please. Thank you in advance!