Alongside with what SmokenFire said, maybe even add a QR code for the link.
Against what he said, I'd actually suggest against the white border. Unless done artfully, such borders on monochrome often make it look more like you just whipped it up in MS Paint. If you cocked it 45 degrees, like Tabasco, where the points of the square are at the top, bottom, and off to the sides - that could work.
That being said, I'm not a fan of the art, and the NEWK'S label looks rather busy with all of the spikeys around the letters. This can work... but part of my problem is that this feels like it clashes with the art; the art is more flowy, whereas your title is more like what you'd see on a chalkboard.
The artwork itself could work. I'm not a fan, but others are. That's okay. You'll never please everyone, so don't try. Personally, I think it's the addition of the tongues that weirds me out the most, and the fact that their eyes are circles with tiny irises like they're incredibly surprised, but not screaming - just exhaling. I mean, make that face yourself (especially with the tongue) and see how weird it feels. That's the feeling I get from the art, which was weird when I actually just tried making the face and was like "holy crap that's it, that's the feeling."
Also the noses. I know some people like to draw them that way, but that style of drawing noses has always weirded me out. Noses don't look like that. That additional curve adds unnecessary detail that draws the eye to the people instead of the mushroom cloud, which is what you want people thinking about. The heat. Not the creepy dudes. (This is also probably true of the tongue).