Kit lenses can do wonders if you know how to use them well, contrary to all the hype about more expensive gear.
You have gotten a shot from a lower perspective then the insect, and the emptiness of the blue sky around the subject can help to make a good picture. What you may want to consider (in future, such similar opportunities), is to give the blue skies space to accentuate the butterfly on the flower. Cropping a picture here and there just because others may prefer so does not mean that you will get a good picture. Look around, outside of this forum, outside of this little island, if you will. There are examples of wonderful photos, with a similar composition. What works for them? Does it appeal to you? And then you go along those lines.
works very well for me. a minor nitpick is the little leaf at the bottom of the stem which is distracting. not sure how good yr photoshop skills are but you could crop or clone that out.
75% of my shots are usually with the so-called 'kit-lens'. the 18-70 is actually not a kit-lens, U just bought a camera body with a lens in the same box. Hence 'kit-lens'... not like the 18-55 canon crap =P