This is a class image Saurabh - congrats on this one ! The posture of butterflies combined with contrasting, pleasing orange background gives this image an artistic dimension beyond the typical subject freezed in mid air thanks to fast auto focus kind of images. I am not saying freezing butterflies in flight is an easy task, it is not - but you went a step ahead in that direction and the image is artistic too. Composition if perfect, if this were mine I would not change any thing from composition perspective. May be sharpening a bit will add the image. I think wing blur is perfect for my eyes.
Thanks for sharing.