Way too small. Also, since I can't tell what the plant is in part because of how small the shot is, I have no idea if it's really a particularly smelly one.
Very small image and I have no idea what it is. To me it's just a shot of a weed. I would not know by looking at this if it has anything to do with the challenge topic. Please shoot me an email with more information about this and I will adjust your score accordingly.
Looks like a good picture, but it's so small, it's hard to judge. Next time I suggest trying to make it so the larger dimension is closer to 640 (the size limit).
First thing I notice is that the image is far too small. You have 640 pixels on the longest side and often it's best to use them. Something so small makes it more difficult to see the image. If you're not sure how to resize the image down to 640 using your editing software you could always post on the forum and I'm sure someone could help you out. The image itself is ok for what I can see, but it doesnt really do much else.