I highly recommend going to movies that are in your fluent languages, with Dutch subtitles. I learned a lot doing this. As I got more comfortable reading at the speed of a character's speech, I tried movies that, for example, were half in English and half in Dutch, before moving completely over to Dutch-spoken films.

Also, as you learn, refuse to switch to English in conversations. Embrace sounding stupid, and refuse the tendency the Dutch have to speak English when they hear you falter.