Best way to clean my GTX 760 video card

Hello, Every couple months I like to open up my computer and try to dust it out to the best of my abilities. Today I opened it up just to see and my computer was not horrible.

But then I looked a my video card (GTX 760). It Was covered in dust. All sorts of dust are stuck in the card heat sinks. I would like to know the best way to clean it. I do not know if a conventional air can will be able to do the job. Thanks