Under rating threshold (hideshow)
lvl 20, follow the outline of the tree on the left of the paining on the left until you find the 1 pixel that's different (and clickable). You must click the 4 obvious differences first.
Under rating threshold (hideshow)
OMG lol Kiroto is correct. Search pixel by pixel OR just randomly move your mouse in the tree thing and look out for the cursor change.
Under rating threshold (hideshow)
ITS THE CLOUD CLICK THE LEFT CLOUND ON LEVEL 20!!!!!! this if for people who are having diffuculties (bad wording for me)
Under rating threshold (hideshow)
20 Is kinda stupid! You have to find the little little-ish troll pixel that you'll never seen! Find it on the cloud that has a shaped butt!