Pointillism describes a technique in which hundreds of small dots or dashes of pure colour are applied to the canvas in order to create maximum luminosity. Colour spots are blended into a range of tones. The dots of colour give a richer and more subtle effect then can be achieved by conventional techniques. George Seuart and Paul Signac were well known for using this technique.
Check your colour wheel as using complimentary colours can intensify your colours. Caroline used cotton buds to add the dots to her painting blending with them. Viewing from a certain distance the dots of colour blend into a richer and more subtle effect.