The main thing to keep in mind with daisies is that they are mostly very simple - in fact they often symbolize simplicity, optimisim and happiness, so when you're drawing them, aim for clean, fresh lines without too much fuss.
While some flowers are very uniform, daisies like these ones all vary slightly. Take a good look at some different photos of the flower you are drawing to see how different specimens vary. Now you've drawn a flower from a photograph, why not try sketching some from life? It's a little bit tricker, but the result is a natural looking sketch with much more of your own personality.
You can click on this pic to get the larger sized version for easy copying or printing. For personal use only please. Note that this tutorial is copyright of Helen South and About.com, and is not to be reproduced on any website, blog, or saved to any sharing service such as Tumblr. Links to this lesson, however, are much appreciated! Thanks so much for respecting copyright.