Nice use of negative space :) 

 ...Where's the face? I can't find It :/

Great Job ^^

Cool illusion,  it took a few moments to sink in but I see it!

Lol, that took me a little while to understand. Great job, looks really cool either way you interpret it. :)

Love it! Couldn't see it at first glance.

 a3um you're right for sunglasses ;)

That's funny that only a few people see the face ^^.

  Great!

Well done; though I wonder, what is the green plant/seed thingy and how does it relate to the face...

Wow! That's really nicely executed. Well done!

 i Still Can't See it :( help ????

optical illusions are cool :D 

Cool!

(where's the face: look only the blue area... remove that top left thing from the pic and you should see it.)

Superb use of negative space :D I digg it!

 Wow, good shading.

I see two faces =)

Nice! I see it

looks good - where's the face, though? o.o