"Conductors, singers, pianists, all virtuosos should know that the first condition that must be fulfilled by anyone who aspires to the imposing title of interpreter, is that he be first of all a flawless executant." - Stravinsky
English speakers find French a notoriously difficult language to sing. However you don't need to speak a language fluently in order to sing it correctly - it is more important to have clear diction and a good accent than to know rules of grammar or have a large vocabulary.
After many years of living and working in Paris, performing as a principal artist at the Paris Opera and in the regional opera houses of France - I can offer you my years of experience with the French language to help you interpret your French mélodie, aria or chanson with sincerity, understanding and good articulation and pronunciation.