I've seen many stamps with flowers and leaves which look like doodles so I decided to doodle my own doodles and for a dimensional effect, cut them out and glue them to a card.  

As you will see, there is no artistic skill here at all!  The idea for white dots around the completed image came from the Book of Kells.  In illuminated manuscripts the monks put red dots around their pictures to make them stand out against the parchment.  Like this...

I went with a black background because it really made the colours pop and instead of red dots, added white dots applied with a white Posca pen which I've found is the best for really clean white lines.  The video is below and if you get some ideas of your own, please give a thumbs up.  Enjoy :)