Answer:
Buzzards are widely known for their apperance being creepy or scary, When buzzards flock together they can be seen as one giant dark circle comparing Mr.Shiftlets thoughts or head to a group of buzzards could be taken as one dark cloud in his head or multiple eery thoughts being grouped together.
Explanation:
Im not sure if this is the answer you are looking for but this is how I would answer hope it helps!
Let's number them okay. Since I can't see everything that is said in the picture I will have to assume it is either number 3 or 4.
5 is being, 6 is has been, 8: has been done, have been built, has been put on, is done, the walls are being painted, fitted, is, fit