Hm. English is my native language, but I'm in my second year of Russian, and my second semester of French, but I'd recommend finding someone with more experience than I have. I can't always pronounce things correctly (stupidEnglishspeakingtongue) but I might be able to make some recommendations.
ALSO FREE TIP: If you are going to record a voicebank in a language or are learning a language, listen to songs that are in that language. It's a BIG help, and helps solidify the language and its pronunciation in your brain.

t.A.T.u is a great Russian band, if you don't mind LGBT undertones with some of their songs. (I recommend Obyzyanka Nol and Nas Nye Dagoniat to begin with, as well as Novoya Model) Zazie, Lara Fabian (Canadian, but some of her songs are in French) and Coeur de Pirate are some good French ones.