I love taking pictures of flowers. They are so colorful and make photos “pop”. These types of shots are not terribly difficult at all. You can do them with most any lens.
If it is one particular flower that you are taking a photo of, try and use a large aperture (small F number) so that you can seperate the subject from the background a bit. Using Vivid as the picture control also helps to bring out the colors more.
If you want a bit more of a boost, you can increase your saturation by 1 or 2 clicks. For me, it is always nice to catch flowers when they are in full bloom.