What this photo has going for it.
I love that the small details on the butterfly stayed visible and the shallow DOF that you achieved is great with both the butterfly and the leaf perfectly focused. When you get focus right like you did here, all textures and colours are highlighted and the photo takes on a whole new dimension because of those textures.
Improvements that could be made.
What could be improved on this photo is composition.
You placed the butterfly in the centre of the photo whilst leaving too much to distract around the edges such as the orange leaves. Centred composition is the most basic one and where we all start and whilst is it great for some photos (read back over some of our other reviews), other times it would tell much better story if composition was more creative.
You should always aim to make your subject the centre of attention but that doesn’t necessarily mean it should be placed in the centre. Your subject should be the thing that will get the most attention while looking at the photo. So if your subject is brownish, you should try to avoid vibrant colours in the background that will pop out more than subject itself. It would be OK if you had a whole background of bright orange, but only one item popping out in the corner should be avoided.