Okay, just ading to PHOTMAKER's game advice.
After you click the glass, click the table the glass was on and the flower pot that is above that table. then click the glass, repeatly, as fast as you can. Then after that disappears follow PHOTOMAKER's directions, until the bar thing appears. What you want to do with that is wait a few seconds and another arrow will start to move up the left side of the bar very quickly and just try to stop it when it is even with the other arrow. Since this takes a few seconds to start that a good time to quickly click the snail, bag, and face, so you don't miss out when the Nike symbol clicking is worth 50 points a click. Everything else is dead on in PHOTMAKERS directions.
Now time for some spoiler picture, so don't look if you want to be surprised.
(Got them for every grade, except E because it was just a picture of the room
)
Also, the grade go from E to A and you can get a grade of S if you get all the special random click things that PHOTOMAKER listed
