My new dreads
Hi Mat, welcome to this wonderful site. As a new one here, I recommend reading the dreaducation page, tab found at the top, to find all shorts of wonderful tips on how to care for your dreads. It is good to see that you did not twist tightly, as they need to be loose in order to start the dreading process. Sections where they meet the scalp should be no larger than 1 inch or a 25 cent coin, this is because they take longer to dry:up to 24 hours, and also get heavy as they grow. That is why S.E. is asking how big the section is.
With long hair, you will have plenty of shrinkage, so be prepared for that. A guide to healthy life long dreads: no crochet hooks or felting, no wax, no wax and no wax. don't retwist or rebackcomb and careful what you wash with, as regular shampoos leave behind a residue which will build up inside your locks.
Enjoy your journey & all the crazy things your hair will do in the first year. Happy Dreading & Cheers,