Composition is subjective, so there is no right or wrong answer. There are however things that people might like or dislike on average.
There is no way to answer whether this is a "good" picture without knowing what it was intended to be. Is this supposed to be a artsy picture of a bud with some ants on it for interest, something you will hand in as homework for entomology class, or something in between? If the latter, I feel reasonably comfortable saying it's not a good picture. If the former, it's all up to you.
Personally, the large space at right bothers me, which makes me feel uncomfortable with the whole picture. But, I tend to be less a fan of "negative space" unless it works with the main subject somehow. For example, if you have someone looking off into the distance, you want to show that distant scene being gazed at, although that's perhaps not "negative space" as most people use the term. There is nothing on the bud that somehow refers me over to the right, so to me the large space at right feels somewhat annoying, although I can't articulate why as well as Stan did for his perception. I don't find myself looking at the blobs, but it still bothers me.
Also, what's the story here? Is it the ants, the bud, what? The right ant bent over licking it's butt seems to be a sub-story in itself, but it doesn't fit with the rest. If this is entomology homework, than that may be totally appropriate and even the main point. Otherwise, I'd probably pick a different picture from the series where the ants are arranged differently somehow.