A little example of something for nothing. We all have the little pigment ink pads which work as water colours. So away you go. Scribble cartoon type flowers on a piece of white card stock with a fine permanent marker and colour wash. Don't try to be "perfic". The more child like the better. And don't worry about the colour going over the lines, again this adds to it.
Cut out a few flowers and use as embellishments. Frame your picture with a lacy border.