No worries, no rush.
Accompanying YouTube documentation will help those that like to watch and learn, with the added bonus of increasing project visibility by having more videos on YouTube.
I’m personally quite fond of having the documentation in a wiki instead of PDF. People can easily suggest edits if they read something and might have a better way to word something.
Make sure to post what you showcase at Mumbai Comiccon. I’m very impressed with the quality of your work thus far and am quite interested to see.