Hmm, i should probably have given you guys some information about the plant, as he isn't just any carnivorous plant. There are many odd facts about him, but none of them are particularily relevant to his appearance.
But anyways, for the thorns, the reason i chose the reddish color is partly because it would be hard to distinguish the thorns with a green coloration, and also because i thought of how a rose doesn't have green thorns. However, after coloring them green again, they actually stand out more than i thought, and they're much better for camouflage.

As for the mouth, it is how it is because of how it opens, which is more or less similar to an oyster opening and closing. Regardless, i've given him some kind of chin. I think he looks odd with an enormous head like that, but heck, he's meant to be odd.
Also, the eyes. Yeah, they're not exactly natural, but they're part of the character. He wouldn't have a lot of personality without them. I've made their outline a bit more clear on the gray background, however.
The base is supposed to be some large leaves, but apparently i haven't made that clear enough in the image. They've even been mistaken for a flower pot, so i must be really bad at drawing large leaves.

Oh yeah, fixed that outline thing you mentioned. Thanks for your criticism.


How's that?