I've set up a document where you can see who has signed up for an Etymology Extra Credit project and when each person signed up. Remember, you have 24 hours from when you sign up to submit your assignment (or you get the whole weekend if you sign up on a Friday).
If you are missing a large number of regular credit assignments, you will not be permitted to complete any extra credit work. There's no sense in doing extra if you haven't done what's required. Also, if you don't abide by the 24-hour-submission rule, you'll have to wait a little while before I'll allow you to sign up for a new word.
Here's the link to the sheet. Let me know if you have questions!