Fake dew on a rose

I’m going to let you into a little secret.  Not everything you see in a photograph is real.  For example when you see a photograph of a flower with a spattering of little dew dropplets on it – the chances are that ‘dew’ was water from one of those plant sprayers that produce a fine mist of water. 

I learned that trick when I was doing a photography course a few years back.  Until yesterday I had never tried it out.  What you can see from today’s picture is that clearly no-one told me how to only get only a FEW dew drops.  Any plant and flower photographers out there care to let me into the secret?