Here are stickers I own and have scanned, edited, and uploaded so you can add to your own virtual stickerbook! If you use them, please link back so people can find more if they want.
I found these at a dollar store in the late 2000s and had to own them. You can see the full sheet here. I have not altered the stickers in anyway except to make them transparent. This is how they were sold. Can you spot the characters that aren't even from Sailor Moon?