I got no idea about macro but think this has a good feel to it. The focus is not so sharp on the butterfly but a good effort. With a first go like this no doubt you will master macro shots very quickly!
Nice work. Catching the butterfly is not an easy thing to do. You did it very well. I like the focus also just like the previous comment. Thanks for sharing, :o)
nice attempt, good idea, just make sure you are actually focusing what you intend cause with macro lenses it gets a bit tricky. on the composition issue id recommend a much more dynamic angle. and did you lens actually say macro on it? cause using an extender and using a macro lens is a whole different thing, macro lenses let you get closer than 1 foot from the subject and be able to get proper focus, normal optics, even with extenders wont allow you to get proper focus if the lens is less than 1 foot away from the subject. if you want more info or help contact me