
Took me a little while, but here is the cushion tutorial which I promised earlier! I would like to admit here that I am not the world’s best seamstress, and there are very possibly better ways of doing this – if you know of one, please feel free to point out all my mistakes in the comments.
I hope someone finds this useful – if nothing else, this will save me wracking my brain trying to remember how I did next time I want to sew cushion covers. If you do go ahead and sew your own, I’d love to hear about it!

Thanks for the tutorial! I bought some cushion inserts from the op shops for my wedding but forgot that I had no idea how to sew a cover. I love this one because it’s quick, easy and doesn’t require a zipper.
The first one I used your tip of the 10% less but it was a bit too snug on my cushion (they have a lot of stuffing in them). The second time I just made it the size of the cushion and it fit great!