No, but you're on track with part of it!
Yup!
That would be one of them I hadn't heard of, but you got it!
Now just 4 & 6 to go. Enjoy your weekend in the meantime!
Because I don't know who owns the rights ...
Cracked.com -> Humor -> Weird World puts up different pictures at times that look like they must have been digitally altered, but really aren't. Some of them have multiple angles to demonstrate how the illusions worked. My favorites are in the "17 more images you won't believe aren't photoshopped". The checker-board is in there, with another angle that shows the paint in odd places. (Err, fair warning, their commentary tends to be at least PG-13.)
If you search for "not photoshopped" or "forced perspective" you can find a lot of interesting pictures!
No, it was just easier that way! A couple of them are pretty unknown, at least in the U.S. (I base this on the fact that I hadn't heard of them, but they looked neat!)
4, 6, 7, & 8 are the ones still unsolved.
Anza, if you hang out in the Riddles forum long enough, you'll see that posting twice in a row (inside AND outside the edit limit) happens quite often. (Sometimes so does double-posting when you hit the 'Post' button more than once when it seems to be taking a while ...) Nothing to worry or be embarrassed about, honest! We know ideas come at different times & places.