Dead head flowers such as old fashioned Pinks, Fuchsias and Pansies to encourage further flowering and if you want a tip, cut your Pansies off to a few inches with the scissors, add a bit more compost and plant over the top of them with possibly Salvias or Geraniums.  The Pansies will then start shotting again and give a lovely floral base.  For monster heads of Dahlias pinch out some of the buds to leave a ‘king’ flower that will draw energy and grow really large.  Pinch out the top of the main shoot of Chrysanthemum and Dahlia plants so they grow bushy and produce many more side shoots – up to ten per plant if you are lucky.