Since I started this pretty late in the evening, I just realised it's quite late - and I gotta go to work in the morning - so I'm calling it a night.
I did, however, finish one cover. Once it was squared up, I realised I was really crooked! Thankfully, once it had the cushion in it, it doesn't look too bad.... Note to self - make sure you square up BEFORE you put on the borders!! ;)