Butterflies delight us carbon based bi-peds and torment us photographers. Pretty to look at and so difficult to get sharp. Your butterfly comes across as quite soft through all the planes of the image. I do not think this is camera shake but rather the focus may have been off. Some photographers want their images to appear soft at times and I'm wondering if that is what you were gunning for? I do think the composition and crop are very well done showing the environs of this pretty "flying flower" as we sometimes refer to the butterfly.