Even while I'm working on one I find myself planning the next! I mainly think of colour combinations I want to use. I make all the centres of the 12 squares then I do the next row of each and so on, as this makes for the most uniform design and I can select thinner or thicker yarns as needed. If I have a very large supply of one sort of yarn it makes things much simpler, but those aren't quite as much fun.
It was a long time before I felt happy taking yarn, my sweaters were so slow in the making I had nothing to show for what I took. Not so with granny square throws. They are small - only about 3 x 4 feet - but then this group knits for babies and children, so that seems appropriate. Just working on them in front of the telly a few evenings a week I can churn one out about every fortnight (two weeks).
I never thought something with as many holes it would be warm, but I've learned they are, as my creations keep me cozy while I work on them.
And this last throw - obviously not granny squares - I made somewhere back in the 1980s, I think. I've never used it much, never even finished it properly by trimming the ends. It just gathered dust in the attic and I decided it was time to pass it along.