It is alright. Take a deep breath. Even if we do have to enter with unshaded drawings they can always be updated. It is not a big deal. As they are your drawings do look sexy.
Someone posted in the thread.
"If you're still interested in continuing the project, the Jam deadline isn't a Hard Cut off.
You can still contact the Host and get your game in the jam submissions, and you can even keep working on it and make updates after.
The point of the Jam is to have fun, so don't let your ambitions be crushed, take the time you need."
Even strangers agree it is just a game jam. Don't stress over it.